| operation | | |
| n. (state) | 1. operation | the state of being in effect or being operative.; "that rule is no longer in operation" |
| ~ activeness, action, activity | the state of being active.; "his sphere of activity"; "he is out of action" |
| ~ commission | the state of being in good working order and ready for operation.; "put the ships into commission"; "the motor was out of commission" |
| ~ running | the state of being in operation.; "the engine is running smoothly" |
| ~ idle | the state of an engine or other mechanism that is idling.; "the car engine was running at idle" |
| n. (act) | 2. operation | a business especially one run on a large scale.; "a large-scale farming operation"; "a multinational operation"; "they paid taxes on every stage of the operation"; "they had to consolidate their operations" |
| ~ business activity, commercial activity | activity undertaken as part of a commercial enterprise. |
| n. (act) | 3. operation | a planned activity involving many people performing various actions.; "they organized a rescue operation"; "the biggest police operation in French history"; "running a restaurant is quite an operation"; "consolidate the companies various operations" |
| ~ activity | any specific behavior.; "they avoided all recreational activity" |
| ~ rescue operation | an operation organized to free from danger or confinement. |
| ~ undercover operation | an operation involving secret work within a community or institution. |
| n. (process) | 4. operation | (computer science) data processing in which the result is completely specified by a rule (especially the processing that results from a single instruction).; "it can perform millions of operations per second" |
| ~ memory access, access | (computer science) the operation of reading or writing stored information. |
| ~ computer science, computing | the branch of engineering science that studies (with the aid of computers) computable processes and structures. |
| ~ asynchronous operation | operations that occur without a regular or predictable time relation to other events. |
| ~ auxiliary operation, off-line operation | a operation performed by off-line equipment not under the control of the central processing unit. |
| ~ binary arithmetic operation, binary operation, boolean operation | an operation that follows the rules of Boolean algebra; each operand and the result take one of two values. |
| ~ computer operation, machine operation | an elementary operation that a computer is designed and built to perform. |
| ~ concurrent operation | two or more operations performed at the same time (or within a give interval). |
| ~ control function, control operation | an operation that controls the recording or processing or transmission of interpretation of data.; "a control operation started the data processing" |
| ~ data processing | (computer science) a series of operations on data by a computer in order to retrieve or transform or classify information. |
| ~ dyadic operation | an operation on exactly two operands. |
| ~ fixed-cycle operation | an operation that is completed in a specified number of regularly timed execution cycles. |
| ~ logic operation, logical operation | an operation that follows the rules of symbolic logic. |
| ~ monadic operation, unary operation | an operation with exactly one operand. |
| ~ multiplex operation | an operation in which two or more activities are interleaved. |
| ~ parallel operation, simultaneous operation | the simultaneous execution of two or more operations. |
| ~ printing operation | an operation that controls the printing or display of information. |
| ~ lookup, search | an operation that determines whether one or more of a set of items has a specified property.; "they wrote a program to do a table lookup" |
| ~ consecutive operation, sequential operation, serial operation | the sequential execution of operations one after another. |
| ~ sorting, sort | an operation that segregates items into groups according to a specified criterion.; "the bottleneck in mail delivery is the process of sorting" |
| ~ synchronous operation | operations that are initiated predictably by a clock. |
| ~ threshold operation | an operation performed on operands in order to obtain the value of a threshold function. |
| n. (act) | 5. military operation, operation | activity by a military or naval force (as a maneuver or campaign).; "it was a joint operation of the navy and air force" |
| ~ activity | any specific behavior.; "they avoided all recreational activity" |
| ~ combined operation | a military operation carried out cooperatively by two or more allied nations or a military operation carried out by coordination of sea, land, and air forces. |
| ~ maneuver, simulated military operation, manoeuvre | a military training exercise. |
| ~ military campaign, campaign | several related operations aimed at achieving a particular goal (usually within geographical and temporal constraints). |
| ~ naval campaign | an operation conducted primarily by naval forces in order to gain or extend or maintain control of the sea. |
| ~ military mission, mission | an operation that is assigned by a higher headquarters.; "the planes were on a bombing mission" |
| ~ reinforcement, reenforcement, support | a military operation (often involving new supplies of men and materiel) to strengthen a military force or aid in the performance of its mission.; "they called for artillery support" |
| ~ attack, onrush, onset, onslaught | (military) an offensive against an enemy (using weapons).; "the attack began at dawn" |
| ~ offence, offensive, offense | the action of attacking an enemy. |
| ~ peacekeeping, peacekeeping mission, peacekeeping operation | the activity of keeping the peace by military forces (especially when international military forces enforce a truce between hostile groups or nations). |
| ~ amphibious operation | a military operation by both land and sea forces. |
| ~ information gathering | the act of collecting information. |
| ~ psychological operation, psyop | military actions designed to influence the perceptions and attitudes of individuals, groups, and foreign governments. |
| ~ covert operation | an intelligence operation so planned as to permit plausible denial by the sponsor. |
| ~ argonne, argonne forest, meuse-argonne, meuse-argonne operation, meuse, meuse river | an American operation in World War I (1918); American troops under Pershing drove back the German armies which were saved only by the armistice on November 11. |
| ~ operation desert storm | the United States and its allies defeated Iraq in a ground war that lasted 100 hours (1991). |
| ~ armed forces, armed services, military, military machine, war machine | the military forces of a nation.; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker" |
| n. (act) | 6. operation, surgery, surgical operation, surgical procedure, surgical process | a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body.; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery" |
| ~ catheterisation, catheterization | the operation of introducing a catheter into the body. |
| ~ ablation, cutting out, extirpation, excision | surgical removal of a body part or tissue. |
| ~ amputation | a surgical removal of all or part of a limb. |
| ~ angioplasty | an operation to repair a damaged blood vessel or unblock a coronary artery. |
| ~ arthroplasty | surgical reconstruction or replacement of a malformed or degenerated joint. |
| ~ arthroscopy | a minimally invasive operation to repair a damaged joint; the surgeon examines the joint with an arthroscope while making repairs through a small incision. |
| ~ brain surgery | any surgical procedure involving the brain. |
| ~ castration | surgical removal of the testes or ovaries (usually to inhibit hormone secretion in cases of breast cancer in women or prostate cancer in men).; "bilateral castration results in sterilization" |
| ~ cauterisation, cauterization, cautery | the act of coagulating blood and destroying tissue with a hot iron or caustic agent or by freezing. |
| ~ chemosurgery | use of chemical to destroy diseased or malignant tissue; used in treatment of skin cancer. |
| ~ craniotomy | a surgical opening through the skull. |
| ~ cryosurgery | the use of extreme cold (usually liquid nitrogen) to destroy unwanted tissue (warts or cataracts or skin cancers). |
| ~ curettage, curettement | surgery to remove tissue or growths from a bodily cavity (as the uterus) by scraping with a curette. |
| ~ debridement | surgical removal of foreign material and dead tissue from a wound in order to prevent infection and promote healing. |
| ~ decortication | removal of the outer covering of an organ or part. |
| ~ d and c, dilatation and curettage, dilation and curettage | a surgical procedure usually performed under local anesthesia in which the cervix is dilated and the endometrial lining of the uterus is scraped with a curet; performed to obtain tissue samples or to stop prolonged bleeding or to remove small tumors or to remove fragments of placenta after childbirth or as a method of abortion. |
| ~ electrosurgery | surgery performed with electrical devices (as in electrocautery). |
| ~ enterostomy, enterotomy | surgical operation that creates a permanent opening through the abdominal wall into the intestine. |
| ~ enucleation | surgical removal of something without cutting into it.; "the enucleation of the tumor" |
| ~ wrong-site surgery | a surgical operation performed on the wrong part of the body. |
| ~ evisceration | surgical removal of an organ (or the contents of an organ) from a patient. |
| ~ exenteration | surgical removal of the organs within a body cavity (as those of the pelvis). |
| ~ eye operation, eye surgery | any surgical procedure involving the eyes. |
| ~ fenestration | surgical procedure that creates a new fenestra to the cochlea in order to restore hearing lost because of osteosclerosis. |
| ~ gastrectomy | surgical removal of all or part of the stomach. |
| ~ gastroenterostomy | surgical creation of an opening between the stomach wall and the small intestines; performed when the normal opening has been eliminated. |
| ~ gastrostomy | surgical creation of an opening through the abdominal wall into the stomach (as for gastrogavage). |
| ~ heart surgery | any surgical procedure involving the heart. |
| ~ haemorrhoidectomy, hemorrhoidectomy | surgical procedure for tying hemorrhoids and excising them. |
| ~ haemostasia, haemostasis, hemostasia, hemostasis | surgical procedure of stopping the flow of blood (as with a hemostat). |
| ~ hysterotomy | surgical incision into the uterus (as in cesarean section). |
| ~ implantation | a surgical procedure that places something in the human body.; "the implantation of radioactive pellets in the prostate gland" |
| ~ surgical incision, incision, section | the cutting of or into body tissues or organs (especially by a surgeon as part of an operation). |
| ~ intestinal bypass | surgical operation that shortens the small intestine; used in treating obesity. |
| ~ jejunostomy | surgical creation of an opening between the jejunum and the anterior abdominal wall; will allow artificial feeding. |
| ~ major surgery | any surgical procedure that involves anesthesia or respiratory assistance. |
| ~ microsurgery | surgery using operating microscopes and miniaturized precision instruments to perform intricate procedures on very small structures. |
| ~ minor surgery | any surgical procedure that does not involve anesthesia or respiratory assistance. |
| ~ myotomy | surgical incision or division of a muscle. |
| ~ myringectomy | surgical removal of the eardrum. |
| ~ myringoplasty | surgical repair of a perforated eardrum with a tissue graft. |
| ~ myringotomy | surgical incision into the eardrum (to relieve pressure or release pus from the middle ear). |
| ~ neurosurgery | any surgery that involves the nervous system (brain or spinal cord or peripheral nerves). |
| ~ orchiopexy | operation to bring an undescended testicle into the scrotum. |
| ~ osteotomy | surgical sectioning of bone. |
| ~ ostomy | surgical procedure that creates an artificial opening for the elimination of bodily wastes. |
| ~ palatopharyngoplasty, ppp, uppp, uvulopalatopharyngoplasty | surgical resection of unnecessary palatal and oropharyngeal tissue to open the airway; intended to cure extreme cases of snoring (with or without sleep apnea). |
| ~ phlebectomy | surgical removal or all or part of a vein; sometimes done in cases of severe varicose veins. |
| ~ photocoagulation | surgical procedure that uses an intense laser beam to destroy diseased retinal tissue or to make a scar that will hold the retina in cases of detached retina. |
| ~ anaplasty, plastic surgery, reconstructive surgery | surgery concerned with therapeutic or cosmetic reformation of tissue. |
| ~ polypectomy | surgical removal of a polyp. |
| ~ resection | surgical removal of part of a structure or organ. |
| ~ rhinotomy | surgical procedure in which an incision is made in the nose to drain accumulated pus. |
| ~ rhizotomy | surgical procedure in which spinal nerve roots are cut; done (anterior roots) to relieve intractable pain or (posterior roots) to stop severe muscle spasms. |
| ~ sex-change operation, transsexual surgery | surgical procedures and hormonal treatments designed to alter a person's sexual characteristics so that the resemble those of the opposite sex. |
| ~ purse-string operation, shirodkar's operation | a surgical procedure in which a suture is used to close the cervix in a pregnant woman; is performed when the cervix has failed to retain previous pregnancies. |
| ~ sterilisation, sterilization | the act of making an organism barren or infertile (unable to reproduce). |
| ~ strabotomy | the surgical operation of cutting a muscle or tendon of the eye in order to correct strabismus. |
| ~ taxis | the surgical procedure of manually restoring a displaced body part. |
| ~ tracheostomy, tracheotomy | a surgical operation that creates an opening into the trachea with a tube inserted to provide a passage for air; performed when the pharynx is obstructed by edema or cancer or other causes. |
| ~ organ transplant, transplantation, transplant | an operation moving an organ from one organism (the donor) to another (the recipient).; "he had a kidney transplant"; "the long-term results of cardiac transplantation are now excellent"; "a child had a multiple organ transplant two months ago" |
| ~ trephination | an operation that removes a circular section of bone from the skull. |
| ~ tympanoplasty | surgical correction or repair of defects or injuries in the eardrum or the bones of the middle ear. |
| ~ uranoplasty | surgical correction of a defect of the palate. |
| ~ suturing | surgical joining of two surfaces. |
| ~ vasovasostomy | a surgical procedure that attempts to restore the function of the vas deferens after a vasectomy. |
| ~ vivisection | the act of operating on living animals (especially in scientific research). |
| ~ medical procedure | a procedure employed by medical or dental practitioners. |
| ~ surgery | the branch of medical science that treats disease or injury by operative procedures.; "he is professor of surgery at the Harvard Medical School" |
| ~ freeze | anesthetize by cold. |
| ~ suction | empty or clean (a body cavity) by the force of suction.; "suction the uterus in an abortion" |
| ~ decorticate | remove the cortex of (an organ). |
| ~ ablate | remove an organ or bodily structure. |
| ~ hypophysectomise, hypophysectomize | remove the pituitary glands. |
| ~ trepan | cut a hole with a trepan, as in surgery. |
| n. (act) | 7. operation, procedure | a process or series of acts especially of a practical or mechanical nature involved in a particular form of work.; "the operations in building a house"; "certain machine tool operations" |
| ~ work | activity directed toward making or doing something.; "she checked several points needing further work" |
| n. (process) | 8. functioning, operation, performance | process or manner of functioning or operating.; "the power of its engine determines its operation"; "the plane's operation in high winds"; "they compared the cooking performance of each oven"; "the jet's performance conformed to high standards" |
| ~ physical process, process | a sustained phenomenon or one marked by gradual changes through a series of states.; "events now in process"; "the process of calcification begins later for boys than for girls" |
| n. (cognition) | 9. cognitive operation, cognitive process, mental process, operation, process | (psychology) the performance of some composite cognitive activity; an operation that affects mental contents.; "the process of thinking"; "the cognitive operation of remembering" |
| ~ cognition, knowledge, noesis | the psychological result of perception and learning and reasoning. |
| ~ basic cognitive process | cognitive processes involved in obtaining and storing knowledge. |
| ~ higher cognitive process | cognitive processes that presuppose the availability of knowledge and put it to use. |
| ~ psychological science, psychology | the science of mental life. |
| n. (act) | 10. mathematical operation, mathematical process, operation | (mathematics) calculation by mathematical methods.; "the problems at the end of the chapter demonstrated the mathematical processes involved in the derivation"; "they were learning the basic operations of arithmetic" |
| ~ calculation, computation, computing | the procedure of calculating; determining something by mathematical or logical methods. |
| ~ permutation | the act of changing the arrangement of a given number of elements. |
| ~ combination | the act of arranging elements into specified groups without regard to order. |
| ~ differentiation | the mathematical process of obtaining the derivative of a function. |
| ~ maximization | the mathematical process of finding the maximum value of a function. |
| ~ integration | an operation used in the calculus whereby the integral of a function is determined. |
| ~ exponentiation, involution | the process of raising a quantity to some assigned power. |
| ~ arithmetic operation | a mathematical operation involving numbers. |
| ~ matrix operation | a mathematical operation involving matrices. |
| ~ construction | drawing a figure satisfying certain conditions as part of solving a problem or proving a theorem.; "the assignment was to make a construction that could be used in proving the Pythagorean theorem" |
| ~ relaxation method, relaxation | a method of solving simultaneous equations by guessing a solution and then reducing the errors that result by successive approximations until all the errors are less than some specified amount. |
| ~ math, mathematics, maths | a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement. |
| n. (act) | 11. operation | the activity of operating something (a machine or business etc.).; "her smooth operation of the vehicle gave us a surprisingly comfortable ride" |
| ~ activity | any specific behavior.; "they avoided all recreational activity" |
| ~ business enterprise, business, commercial enterprise | the activity of providing goods and services involving financial and commercial and industrial aspects.; "computers are now widely used in business" |
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