2. (Bot.) One of the bladders or air vessels of certain algæ, as of the great kelp of the Pacific, and common
rockweeds (Fuci) of our shores. D. C. Eaton.
3. (Zoöl.) (a) A small capsule or sac of the kind in which many immature entozoans exist in the tissues
of living animals; also, a similar form in Rotifera, etc. (b) A form assumed by Protozoa in which they
become saclike and quiescent. It generally precedes the production of germs. See Encystment.
Cysted
(Cyst"ed) a. Inclosed in a cyst.