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A pouch or sac without opening, usually membranous and
containing morbid matter, which is accidentally developed in one of the
natural cavities or in the substance of an organ. |
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In old authors, the urinary bladder, or the gall bladder. |
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One of the bladders or air vessels of certain algae, as of
the great kelp of the Pacific, and common rockweeds (Fuci) of our
shores. |
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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. |
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A form assumed by Protozoa in which they become saclike and
quiescent. It generally precedes the production of germs. See
Encystment. |
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