bladder

bladder

1. Anatomy a distensible membranous sac, usually containing liquid or gas, esp the urinary bladder

2. a blister, cyst, vesicle, etc., usually filled with fluid

3. a hollow vesicular or saclike part or organ in certain plants, such as the bladderwort or bladderwrack

Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

bladder

[′blad·ər]

(anatomy)

Any saclike structure in humans and animals, such as a swimbladder or urinary bladder, that contains a gas or functions as a receptacle for fluid.

(geology)

vesicle

McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.