Definition of segment

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Segment (n.) One of the cells or division formed by segmentation, as in egg cleavage or in fissiparous cell formation..

Lern More About Segment

Tripinnatifid :: Tripinnatifid (a.) Thrice pinnately cleft; -- said of a pinnatifid leaf when its segments are pinnatifid, and the subdivisions of these also are pinnatifid..
Segment :: Segment (n.) A part cut off from a figure by a line or plane; especially, that part of a circle contained between a chord and an arc of that circle, or so much of the circle as is cut off by the chord; as, the segment acb in the Illustration..
Periblast :: Periblast (a.) The protoplasmic matter which surrounds the entoblast, or cell nucleus, and undergoes segmentation..
Brachium :: Brachium (n.) The upper arm; the segment of the fore limb between the shoulder and the elbow.
Thoracica :: Thoracica (n. pl.) A division of cirripeds including those which have six thoracic segments, usually bearing six pairs of cirri. The common barnacles are examples..
Cirrus :: Cirrus (n.) A soft tactile appendage of the mantle of many Mollusca, and of the parapodia of Annelida. Those near the head of annelids are Tentacular cirri; those of the last segment are caudal cirri..
Blastide :: Blastide (n.) A small, clear space in the segments of the ovum, the precursor of the nucleus..
Articulate :: Articulate (a.) Jointed; formed with joints; consisting of segments united by joints; as, articulate animals or plants..
Article :: Article (n.) One of the segments of an articulated appendage.
Protopodite :: Protopodite (n.) The basal portion, or two proximal and more or less consolidated segments, of an appendage of a crustacean..
Two-cleft :: Two-cleft (a.) Divided about half way from the border to the base into two segments; bifid.
Sutured :: Suture (n.) A seam, or impressed line, as between the segments of a crustacean, or between the whorls of a univalve shell..
Thalamencephalon :: Thalamencephalon (n.) The segment of the brain next in front of the midbrain, including the thalami, pineal gland, and pituitary body; the diencephalon; the interbrain..
Nephridium :: Nephridium (n.) A segmental tubule; one of the tubules of the primitive urinogenital organs; a segmental organ. See Illust. under Loeven's larva.
Morula :: Morula (n.) The sphere or globular mass of cells (blastomeres), formed by the clevage of the ovum or egg in the first stages of its development; -- called also mulberry mass, segmentation sphere, and blastosphere. See Segmentation..
Articulus :: Articulus (n.) A joint of the cirri of the Crinoidea; a joint or segment of an arthropod appendage.
Scutellum :: Scutellum (n.) The third of the four pieces forming the upper part of a thoracic segment of an insect. It follows the scutum, and is followed by the small postscutellum; a scutella. See Thorax..
Thyrohyal :: Thyrohyal (n.) One of the lower segments in the hyoid arch, often consolidated with the body of the hyoid bone and forming one of its great horns, as in man..
Segmented :: Segmented (a.) Divided into segments or joints; articulated.
Urite :: Urite (n.) One of the segments of the abdomen or post-abdomen of arthropods.
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