vesicule

Noun

vesicle (plural vesicles)

1. A membrane-bound compartment found in a cell.
2. A small sac filled with juice, one of many constituting the pulp of a fruit such as an orange, lemon, or grapefruit.
3. A small sac or cyst or vacuole, especially one containing fluid. A blister formed in or beneath the skin, containing serum. A bleb.
4. (usually and especially) Such a blister that is less than 5 mm in diameter.

   Synonyms:

   vesicula

5. A pocket of embryonic tissue that is the beginning of an organ.
6. A small cavity formed in volcanic rock by entrapment of a gas bubble during solidification.
   • It frequently contains holes, or vesicles, especially nearer the surface of a flow where gas has escaped.2004, Richard Fortey, The Earth, Folio Society, published 2011, page 51