n. | 1. | A bladderlike vessel; a membranous cavity; a cyst; a cell. |
2. | (Bot.) A small bladderlike body in the substance of a vegetable, or upon the surface of a leaf. | |
3. | (Med.) A small, and more or less circular, elevation of the cuticle, containing a clear watery fluid. | |
4. | (Anat.) A cavity or sac, especially one filled with fluid; | |
5. | (Zool.) A small convex hollow prominence on the surface of a shell or a coral. | |
6. | (Geol.) A small cavity, nearly spherical in form, and usually of the size of a pea or smaller, such as are common in some volcanic rocks. They are produced by the liberation of watery vapor in the molten mass. |
Noun | 1. | vesicle - a small anatomically normal sac or bladderlike structure (especially one containing fluid) Synonyms: cyst |