noun, plural: vesicles
(cell biology) A bubble-like membranous structure that stores and transports cellular products, and digests metabolic wastes within the cell; an intracellular membranous sac that is separated from the cytosol by at least one lipid bilayer.
(phycology) A floating gas-filled bubble or bladder-like structure in algal cell.
Word origin: from Latin vēsīcula, diminutive of vēsīca, bladder, blister.
Related phrases: synaptic vesicle, auditory vesicle, optic vesicle, seminal vesicle.