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vesicle
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- Vesicle - n. - A bladderlike vessel; a membranous cavity; a cyst; a cell.
- Vesicle - n. - A small bladderlike body in the substance of vegetable, or upon the surface of a leaf.
- Vesicle - n. - A small, and more or less circular, elevation of the cuticle, containing a clear watery fluid.
- Vesicle - n. - A cavity or sac, especially one filled with fluid; as, the umbilical vesicle.
- Vesicle - n. - A small convex hollow prominence on the surface of a shell or a coral.
- Vesicle - n. - 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.
- Spore - n. - An embryo sac or embryonal vesicle in the ovules of flowering plants.
- Bladder - n. - Any vesicle or blister, especially if filled with air, or a thin, watery fluid.
- Blister - n. - A vesicle of the skin, containing watery matter or serum, whether occasioned by a burn or other injury, or by a vesicatory; a collection of serous fluid causing a bladderlike elevation of the cuticle.
- Subzonal - a. - Situated under a zone, or zona; -- applied to a membrane between the zona radiata and the umbilical vesicle in the mammal embryo.
- Otocyst - n. - An auditory cyst or vesicle; one of the simple auditory organs of many invertebrates, containing a fluid and otoliths; also, the embryonic vesicle from which the parts of the internal ear of vertebrates are developed.
- Areola - n. - The colored ring around the nipple, or around a vesicle or pustule.
- Planula - n. - In embryonic development, a vesicle filled with fluid, formed from the morula by the divergence of its cells in such a manner as to give rise to a central space, around which the cells arrange themselves as an envelope; an embryonic form intermediate between the morula and gastrula. Sometimes used as synonymous with gastrula.
- Splanchnopleure - n. - The inner, or visceral, one of the two lamellae into which the vertebrate blastoderm divides on either side of the notochord, and from which the walls of the enteric canal and the umbilical vesicle are developed. See Somatopleure.
- Pustule - n. - A vesicle or an elevation of the cuticle with an inflamed base, containing pus.
- Bleb - n. - A large vesicle or bulla, usually containing a serous fluid; a blister; a bubble, as in water, glass, etc.
- Pedicel - n. - A slender support of any special organ, as that of a capsule in mosses, an air vesicle in algae, or a sporangium in ferns.
- Cystocarp - n. - A minute vesicle in a red seaweed, which contains the reproductive spores.
- Chromatophore - n. - A contractile cell or vesicle containing liquid pigment and capable of changing its form or size, thus causing changes of color in the translucent skin of such animals as possess them. They are highly developed and numerous in the cephalopods.