In an animal or plant, a thin-walled, hollow organ or cavity containing a liquid secretion; a sac, vesicle, or bladder
an ovarian cyst
An abnormal growth (teratoma) containing epidermis, hair follicles, and sebaceous glands, derived from residual embryonic cells
A cyst resulting from the obstruction of an excretory duct.
A swelling in the skin arising in a sebaceous gland, typically filled with yellowish sebum
A cyst originating from Rathke's cleft.
Either of the nematodes Globodera pallida and G. rostochiensis (formerly believed to be a single species), which damage the green parts of potato and tomato plants, and can be seen (as small egg-filled cysts) on their roots; also called potato root eelworm.
Nabothian cyst noun a cyst containing secreted fluid which forms following obstruction of a mucous gland of the uterine cervix. Also Nabothian follicle, †Nabothian gland.