corposantAn electrical discharge accompanied by a corona of ionization in the surrounding atmosphere
corpotentoriumA median ventral plate of the tentorium of some insects.
corpus luteumA yellow mass of cells that forms from an ovarian follicle during the luteal phase of the menstrual cycle in mammals; it secretes steroid hormones.
corpus vileA person, animal or thing treated as expendable, to therefore use as an experimental subject regardless of whatever loss or damage it may suffer as a result.
corymbusA topknot anciently worn by girls in their hair.
coryphaeusThe conductor or leader of the chorus of a drama.
corypheusThe conductor or leader of the dramatic chorus in Ancient Greece.
cos.Consul in the year —. (Used, similarly to fl., in dating Roman texts composed by authors whose year of consulship is known, but little else for dating purposes.)
cosmolineA substance obtained from the residues of the distillation of petroleum, essentially the same as vaseline, but of somewhat stiffer consistency, and consisting of a mixture of the higher paraffins.
costmaryAn aromatic plant (Tanacetum balsamita), once used to flavour ale (prior to use of hops); also used as a bookmark in Bibles and other holy texts to dissuade silverfish and other pests.
cothurnA buskin anciently worn by tragic actors on the stage.
credobaptismPractice of the credobaptists; belief that baptism is only to be administered to those who profess their faith.
credophileOne who gets positive pleasure from belief and pain from doubt; one who collects beliefs not for utility but for glitter and for whom, once he or she has embraced a belief, it takes something more than mere disproof to make to let go.
crematorOne who, or that which, cremates or consumes to ashes.