vesicle

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Vesicle

Wikipedia

From French vésicle or its source, Latin vēsīcula.

vesicle (plural vesicles)

(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.
- 2004, Richard Fortey, The Earth, Folio Society 2011, p. 51:
  
  It frequently contains holes, or vesicles, especially nearer the surface of a flow where gas has escaped.

cytology: membrane-bound compartment

small bladderlike cell or cavity

anatomy: small sac or cyst

anatomy: pocket of embryonic tissue

geology: small cavity