Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Anatomy A fluid-containing sac or cavity in the body of an organism.
  • noun Cytology One of the saclike vesicles that comprise the endoplasmic reticulum.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biology Any of the various membranes sections comprising some organelles like the Golgi apparatus and the endoplasmic reticulum.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a sac or cavity containing fluid especially lymph or cerebrospinal fluid

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[Latin, cistern; see cistern.]

Examples

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