- a small, membranous cavity, sac, or cyst; specif.,
- a small cavity or sac filled with fluid; esp., a small, round elevation of the skin containing a serous fluid; blister
- Bot. a small, bladderlike sac filled with air or liquid
- Geol. a small, spherical cavity in volcanic rock, produced by bubbles of air or gas in the molten rock
Origin of vesicle; from French or L: French vésicule ; from Classical Latin vesicula, diminutive of vesica, bladder
A small enclosed structure or cavity, especially:
a. Cytology A membrane-bound structure within a cell in which materials such as enzymes are transported or stored.
b. Anatomy A sac or cyst, especially one containing fluid.
c. Medicine A blister of the skin.
d. Geology A cavity formed in volcanic rock by entrapment of a gas bubble during solidification.
Origin of vesicleMiddle English, from Old French vesicule, from Latin v&emacron;s&imacron;cula, diminutive of v&emacron;s&imacron;ca, bladder, blister.
- (cytology) A membrane-bound compartment found in a cell.
- A small bladder-like cell or cavity.
- (anatomy) A small sac or cyst or vacuole, especially one containing fluid. A blister formed in or beneath the skin, containing serum. A bleb.
- (anatomy) A pocket of embryonic tissue that is the beginning of an organ.
- (geology) A small cavity formed in volcanic rock by entrapment of a gas bubble during solidification.