Definitions

1. noun

A small, usually fluid-filled sac or bladder, especially one in a cell, tissue, or organ.

“The microscope revealed numerous vesicles in the cell membrane.”

2. noun

A small, usually sealed container or bottle, especially one used for packaging or storing liquids or semi-liquids.

“She carefully poured the liquid into the small vesicle and sealed it.”

3. noun

A small amount or quantity of something, especially a liquid.

“The doctor prescribed a tiny vesicle of the medicine to be taken orally.”