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Acephalocyst :: Acephalocyst (n.) A larval entozoon in the form of a subglobular or oval vesicle, or hydatid, filled with fluid, sometimes found in the tissues of man and the lower animals; -- so called from the absence of a head or visible organs on the vesicle. These cysts are the immature stages of certain tapeworms. Also applied to similar cysts of different origin..

Otocyst :: 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..

Allantoid :: Allantoid (n.) A membranous appendage of the embryos of mammals, birds, and reptiles, -- in mammals serving to connect the fetus with the parent; the urinary vesicle..

Bleb :: Bleb (n.) A large vesicle or bulla, usually containing a serous fluid; a blister; a bubble, as in water, glass, etc..

Subzigomatic :: Subzonal (a.) Situated under a zone, or zona; -- applied to a membrane between the zona radiata and the umbilical vesicle in the mammal embryo..

Splanchno-skeleton :: 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..

Pedicel :: 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..

Alveolus :: Alveolus (n.) A small depression, sac, or vesicle, as the socket of a tooth, the air cells of the lungs, the ultimate saccules of glands, etc..

Pro Thyalosoma :: Pro thyalosoma (n.) The investing portion, or spherical envelope, surrounding the eccentric germinal spot of the germinal vesicle..

Vesiculation :: Vesiculation (n.) The state of containing vesicles, or the process by which vesicles are formed..

Vesicular :: Vesicular (a.) Having the form or structure of a vesicle; as, a vesicular body..

Herpes :: Herpes (n.) An eruption of the skin, taking various names, according to its form, or the part affected; especially, an eruption of vesicles in small distinct clusters, accompanied with itching or tingling, including shingles, ringworm, and the like; -- so called from its tendency to creep or spread from one part of the skin to another..

Brain :: Brain (n.) The whitish mass of soft matter (the center of the nervous system, and the seat of consciousness and volition) which is inclosed in the cartilaginous or bony cranium of vertebrate animals. It is simply the anterior termination of the spinal cord, and is developed from three embryonic vesicles, whose cavities are connected with the central canal of the cord; the cavities of the vesicles become the central cavities, or ventricles, and the walls thicken unequally and become the three seg

Umbilication :: Umbilication (n.) A slight, navel-like depression, or dimpling, of the center of a rounded body; as, the umbilication of a smallpox vesicle; also, the condition of being umbilicated..

Blastocyst :: Blastocyst (n.) The germinal vesicle.

Vesicular :: Vesicular (a.) Containing, or composed of, vesicles or vesiclelike structures; covered with vesicles or bladders; vesiculate; as, vesicular coral; vesicular lava; a vesicular leaf..

Swineery :: Swine-pox (n.) A variety of the chicken pox, with acuminated vesicles containing a watery fluid; the water pox..

Germinal :: Germinal (a.) Pertaining or belonging to a germ; as, the germinal vesicle..

Vesicle :: Vesicle (n.) A small, and more or less circular, elevation of the cuticle, containing a clear watery fluid..

Vesicle :: 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..

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