n.
- A small bladderlike cell or cavity.
- Anatomy. A small sac or cyst, especially one containing fluid.
- Pathology. A serum-filled blister formed in or beneath the skin.
- Geology. A small cavity formed in volcanic rock by entrapment of a gas bubble during solidification.
[Middle English, from Old French vesicule, from Latin vēsīcula, diminutive of vēsīca, bladder, blister.]
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
