| cyst | | |
| n. (state) | 1. cyst | a closed sac that develops abnormally in some body structure. |
| ~ dermoid cyst | a cystic tumor (usually benign) with a wall lined with epithelium and a cavity containing other material. |
| ~ galactocele | a cystic tumor containing milk or a milky substance (especially in the mammary glands). |
| ~ blood cyst, hematocyst, hemorrhagic cyst | a cyst containing blood. |
| ~ hydatid | cyst filled with liquid; forms as a result of infestation by tapeworm larvae (as in echinococcosis). |
| ~ nabothian cyst, nabothian follicle | a cyst that forms in the nabothian glands of the uterine cervix. |
| ~ ovarian cyst | a cystic tumor (usually benign) of the ovary. |
| ~ ranula | a cyst on the underside of the tongue. |
| ~ pilar cyst, sebaceous cyst, steatocystoma, wen | a common cyst of the skin; filled with fatty matter (sebum) that is secreted by a sebaceous gland that has been blocked. |
| ~ pathology | any deviation from a healthy or normal condition. |
| n. (body) | 2. cyst, vesicle | a small anatomically normal sac or bladderlike structure (especially one containing fluid). |
| ~ dacryocyst, lacrimal sac, tear sac | either of the two dilated ends of the lacrimal ducts at the nasal ends of the eyes that fill with tears secreted by the lacrimal glands. |
| ~ dictyosome, golgi apparatus, golgi body, golgi complex | a netlike structure in the cytoplasm of animal cells (especially in those cells that produce secretions). |
| ~ sac | a structure resembling a bag in an animal. |
| ~ bleb, bulla, blister | (pathology) an elevation of the skin filled with serous fluid. |
| ~ follicle | any small spherical group of cells containing a cavity. |
| ~ liposome | an artificially made microscopic vesicle into which nucleic acids can be packaged; used in molecular biology as a transducing vector. |
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