| element | | |
| n. (cognition) | 1. component, constituent, element, factor, ingredient | an abstract part of something.; "jealousy was a component of his character"; "two constituents of a musical composition are melody and harmony"; "the grammatical elements of a sentence"; "a key factor in her success"; "humor: an effective ingredient of a speech" |
| ~ be-all and end-all, be all and end all | the essential factor; the all-important element; the supreme aim.; "profit is the be-all and end-all of business" |
| ~ plot element | a component or element of the plot of a story. |
| ~ point | a geometric element that has position but no extension.; "a point is defined by its coordinates" |
| ~ division, section, part | one of the portions into which something is regarded as divided and which together constitute a whole.; "the written part of the exam"; "the finance section of the company"; "the BBC's engineering division" |
| n. (artifact) | 2. component, constituent, element | an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system.; "spare components for cars"; "a component or constituent element of a system" |
| ~ accessory, add-on, appurtenance, supplement | a supplementary component that improves capability. |
| ~ add-on, addition, improver | a component that is added to something to improve it.; "the addition of a bathroom was a major improvement"; "the addition of cinnamon improved the flavor" |
| ~ audio | the sound elements of television. |
| ~ auto part, car part | a component of an automobile.; "his business is auto parts" |
| ~ crystal | a crystalline element used as a component in various electronic devices. |
| ~ computer hardware, hardware | (computer science) the mechanical, magnetic, electronic, and electrical components making up a computer system. |
| ~ heating element | the component of a heater or range that transforms fuel or electricity into heat. |
| ~ ingredient | a component of a mixture or compound. |
| ~ input | a component of production; something that goes into the production of output. |
| ~ landside | component consisting of a side piece opposite the moldboard. |
| ~ making | (usually plural) the components needed for making or doing something.; "the recipe listed all the makings for a chocolate cake" |
| ~ module | a self-contained component (unit or item) that is used in combination with other components. |
| ~ part, portion | something less than the whole of a human artifact.; "the rear part of the house"; "glue the two parts together" |
| ~ pel, picture element, pixel | (computer science) the smallest discrete component of an image or picture on a CRT screen (usually a colored dot).; "the greater the number of pixels per inch the greater the resolution" |
| ~ retrofit | a component or accessory added to something after it has been manufactured. |
| ~ spare, spare part | an extra component of a machine or other apparatus. |
| ~ spark gap | a component of an ignition system; consists of two shaped electrodes and the space between them. |
| n. (substance) | 3. chemical element, element | any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter. |
| ~ substance | the real physical matter of which a person or thing consists.; "DNA is the substance of our genes" |
| ~ atom | (physics and chemistry) the smallest component of an element having the chemical properties of the element. |
| ~ allotrope | a structurally different form of an element.; "graphite and diamond are allotropes of carbon" |
| ~ transuranic element | any element having an atomic number greater than 92 (which is the atomic number of uranium); all are radioactive. |
| ~ argonon, inert gas, noble gas | any of the chemically inert gaseous elements of the helium group in the periodic table. |
| ~ metal, metallic element | any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.. |
| ~ nonmetal | a chemical element lacking typical metallic properties. |
| ~ transactinide | any of the artificially produced elements with atomic numbers greater than 103. |
| ~ ac, actinium, atomic number 89 | a radioactive element of the actinide series; found in uranium ores. |
| ~ ar, argon, atomic number 18 | a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere. |
| ~ as, atomic number 33, arsenic | a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar. |
| ~ astatine, at, atomic number 85 | a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium. |
| ~ atomic number 107, bh, bohrium, element 107 | a transuranic element. |
| ~ atomic number 5, boron, b | a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder. |
| ~ atomic number 35, br, bromine | a nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water. |
| ~ atomic number 6, carbon, c | an abundant nonmetallic tetravalent element occurring in three allotropic forms: amorphous carbon and graphite and diamond; occurs in all organic compounds. |
| ~ atomic number 17, chlorine, cl | a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water). |
| ~ atomic number 110, darmstadtium, ds, element 110 | a radioactive transuranic element. |
| ~ atomic number 105, db, dubnium, element 105, hahnium | a transuranic element. |
| ~ atomic number 9, fluorine, f | a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite. |
| ~ atomic number 32, ge, germanium | a brittle grey crystalline element that is a semiconducting metalloid (resembling silicon) used in transistors; occurs in germanite and argyrodite. |
| ~ atomic number 108, element 108, hassium, hs | a radioactive transuranic element. |
| ~ atomic number 2, he, helium | a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas). |
| ~ atomic number 1, h, hydrogen | a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe. |
| ~ atomic number 53, i, iodin, iodine | a nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks). |
| ~ atomic number 36, kr, krypton | a colorless element that is one of the six inert gasses; occurs in trace amounts in air. |
| ~ atomic number 103, lawrencium, lr | a radioactive transuranic element synthesized from californium. |
| ~ atomic number 109, element 109, meitnerium, mt | a radioactive transuranic element. |
| ~ atomic number 101, md, mendelevium, mv | a radioactive transuranic element synthesized by bombarding einsteinium with alpha particles (Md is the current symbol for mendelevium but Mv was formerly the symbol). |
| ~ atomic number 10, ne, neon | a colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amounts. |
| ~ atomic number 7, n, nitrogen | a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues. |
| ~ atomic number 102, nobelium, no | a radioactive transuranic element synthesized by bombarding curium with carbon ions; 7 isotopes are known. |
| ~ atomic number 8, o, oxygen | a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust. |
| ~ atomic number 15, p, phosphorus | a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells; is highly reactive and occurs in several allotropic forms. |
| ~ atomic number 94, plutonium, pu | a solid silvery grey radioactive transuranic element whose atoms can be split when bombarded with neutrons; found in minute quantities in uranium ores but is usually synthesized in nuclear reactors; 13 isotopes are known with the most important being plutonium 239. |
| ~ atomic number 86, radon, rn | a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health. |
| ~ atomic number 111, element 111, rg, roentgenium | a radioactive transuranic element. |
| ~ atomic number 104, element 104, rutherfordium, unnilquadium, unq, rf | a radioactive transuranic element which has been synthesized. |
| ~ atomic number 106, element 106, seaborgium, sg | a transuranic element. |
| ~ atomic number 34, se, selenium | a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite). |
| ~ atomic number 14, si, silicon | a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors. |
| ~ atomic number 16, sulfur, sulphur, s | an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions). |
| ~ atomic number 52, te, tellurium | a brittle silver-white metalloid element that is related to selenium and sulfur; it is used in alloys and as a semiconductor; occurs mainly as tellurides in ores of copper and nickel and silver and gold. |
| ~ atomic number 112, element 112, ununbium, uub | a radioactive transuranic element. |
| ~ atomic number 116, element 116, ununhexium, uuh | a radioactive transuranic element. |
| ~ atomic number 115, element 115, ununpentium, uup | a radioactive transuranic element. |
| ~ atomic number 114, element 114, ununquadium, uuq | a radioactive transuranic element. |
| ~ atomic number 113, element 113, ununtrium, uut | a radioactive transuranic element. |
| ~ atomic number 54, xe, xenon | a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts. |
| ~ trace element | an element that occurs at very small quantities in the body but is nonetheless important for many biological processes. |
| n. (location) | 4. element | the most favorable environment for a plant or animal.; "water is the element of fishes" |
| ~ environs, surround, environment, surroundings | the area in which something exists or lives.; "the country--the flat agricultural surround" |
| n. (substance) | 5. element | one of four substances thought in ancient and medieval cosmology to constitute the physical universe.; "the alchemists believed that there were four elements" |
| ~ substance | the real physical matter of which a person or thing consists.; "DNA is the substance of our genes" |
| ~ air | once thought to be one of four elements composing the universe (Empedocles). |
| ~ fire | once thought to be one of four elements composing the universe (Empedocles). |
| ~ earth | once thought to be one of four elements composing the universe (Empedocles). |
| ~ ether, quintessence | the fifth and highest element after air and earth and fire and water; was believed to be the substance composing all heavenly bodies. |
| ~ water | once thought to be one of four elements composing the universe (Empedocles). |
| n. (state) | 6. element | the situation in which you are happiest and most effective.; "in your element" |
| ~ situation, state of affairs | the general state of things; the combination of circumstances at a given time.; "the present international situation is dangerous"; "wondered how such a state of affairs had come about"; "eternal truths will be neither true nor eternal unless they have fresh meaning for every new social situation" |
| n. (shape) | 7. element | a straight line that generates a cylinder or cone. |
| ~ straight line | a line traced by a point traveling in a constant direction; a line of zero curvature.; "the shortest distance between two points is a straight line" |
| ~ element of a cone | a straight line joining the apex and a point on the base. |
| ~ element of a cylinder | a straight line running the length of the cylinder. |
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