- * * *1. SYN: vesicula. 2. A small (<1.0 cm in diameter), circumscribed elevation of the skin containing fluid. SEE ALSO: bleb, blister, bulla. 3. A small sac containing liquid or gas. 4. A closed structure surrounded by a single membrane. [L. vesicula, a blister, dim. of vesica, bladder]- acrosomal v. a v. derived from the Golgi apparatus during spermiogenesis whose limiting membrane adheres to the nuclear envelope; together with the acrosomal granule within, it spreads in a thin layer over the pole of the nucleus to form the acrosomal cap.- air vesicles SYN: pulmonary alveolus.- blastodermic v. SYN: blastocyst.- cerebral v. each of the three divisions of the early embryonic brain (prosencephalon, mesencephalon, and rhombencephalon). SYN: encephalic v., primary brain v..- cervical v. an abnormally persisting vestige of the cervical sinus or its associated branchial grooves.- coated v. a v. that has its biomembrane coated with the protein clathrin. It is involved in the transport of proteins from one membrane site to another.- lens v. in the embryo, the ectodermal invagination that forms opposite the optic cup; it is the primordium of the lens of the eye. SYN: lenticular v..- matrix vesicles hydroxyapatite-containing, membrane-enclosed vesicles secreted by odontoblasts and some chondrocytes; believed to serve as nucleation centers for the mineralization process in dentin and calcified cartilage.- ocular v. SYN: optic v..- ophthalmic v. SYN: optic v..- optic v. in the embryo, one of the paired evaginations from the ventrolateral walls of the forebrain from which the sensory and pigment layers of the retina develop. SYN: ocular v., ophthalmic v., vesicula ophthalmica.- otic v. one of the paired sacs of invaginated ectoderm that develop into the membranous labyrinth of the internal ear. SYN: acoustic v., auditory v..- pinocytotic v. a v., a fraction of a micrometer in diameter, containing fluid or solute being ingested into a cell by endocytosis. SEE ALSO: pinocytosis.- synaptic vesicles the small (average diameter 30 nm), intracellular, membrane-bound vesicles near the presynaptic membrane of a synaptic junction, containing the transmitter substance which, in chemical synapses, mediates the passage of nerve impulses across the junction. SEE ALSO: synapse.- telencephalic v. paired diverticula arising from the prosencephalon, from which the forebrain develops.
* * *ves·i·cle 'ves-i-kəl n1 a) a membranous and usu. fluid-filled pouch (as a cyst, vacuole, or cell) in a plant or animalb) SYNAPTIC VESICLE2) a small abnormal elevation of the outer layer of skin enclosing a watery liquid: BLISTER3) a pocket of embryonic tissue that is the beginning of an organ see auditory vesicle, BRAIN VESICLE, OPTIC VESICLE
* * *n.1. a very small blister in the skin, often no bigger than a pinpoint, that contains a clear fluid (serum). Vesicles occur in a variety of skin disorders, including eczema and herpes.• vesicular adj.
* * *ves·i·cle (vesґĭ-kəl) [L. vesicula] 1. a small bladder or sac containing liquid; called also vesicula. 2. a small circumscribed epidermal elevation, usually containing a clear fluid; called also blister. Cf. bulla. 3. a small membrane-bound sac, derived mainly from the plasma membrane, Golgi complex, or endoplasmic reticulum, occurring in eukaryotic cells. 4. the swollen end of a conidiophore from which sterigmata are produced.
Medical dictionary. 2011.
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Vesicle — may refer to:* Synaptic vesicle * Auditory vesicle * Optic vesicles * Seminal vesicle * Subsporangial vesicle * Vesical arteries * Vesicle (biology), a relatively small and enclosed compartment within a cell * Vesicle (dermatology), a liquid… … Wikipedia
Vesicle — Ves i*cle, n. [L. vesicula, dim. of vesica a bladder, blister; akin to Skr. vasti bladder: cf. F. v[ e]sicule.] A bladderlike vessel; a membranous cavity; a cyst; a cell. Specifically: [1913 Webster] (a) (Bot.) A small bladderlike body in the… … The Collaborative International Dictionary of English
vesicle — (n.) 1570s, from M.Fr. vesicule, from L. vesicula, dim. of vesica bladder, blister (see VENTRAL (Cf. ventral)) … Etymology dictionary
vesicle — ► NOUN 1) Anatomy & Zoology a small fluid filled sac or cyst. 2) Medicine a blister full of clear fluid. 3) Botany an air filled swelling in a seaweed or other plant. 4) Geology a small cavity in volcanic rock, produced by gas bubbles.… … English terms dictionary
vesicle — [ves′i kəl] n. [< Fr or L: Fr vésicule < L vesicula, dim. of vesica, bladder] 1. a small, membranous cavity, sac, or cyst; specif., a) Anat. Med. a small cavity or sac filled with fluid; esp., a small, round elevation of the skin containing … English World dictionary
vesicle — n. small blister; bladder like or rounded cavity; cell; cyst. ♦ vesical, a. pertaining to bladder; oval. ♦ vesicant, ♦ vesicatory, a. raising blisters. ♦ vesicate, v.t. blister. ♦ vesicular, a. like a vesicle or bladder; bearing… … Dictionary of difficult words
vesicle — noun Etymology: Middle French vesicule, from Latin vesicula small bladder, blister, from diminutive of vesica Date: 1578 1. a. a membranous and usually fluid filled pouch (as a cyst, vacuole, or cell) in a plant or animal b. a small abnormal… … New Collegiate Dictionary
vesicle — См. vesicula … Dictionary of invertebrate zoology
vesicle — A closed membrane shell, derived from membranes either by a physiological process (budding) or mechanically by sonication. Vesicles of dimensions in excess of 50nm are believed to be important in intracellular transport processes. See also coated … Dictionary of molecular biology
vesicle — /ves i keuhl/, n. 1. a small sac or cyst. 2. Biol. a small bladderlike cavity, esp. one filled with fluid. 3. Pathol. a circumscribed elevation of the epidermis containing serous fluid; blister. 4. Geol. a small, usually spherical cavity in a… … Universalium