Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of segment is as below...

Thorax :: Thorax (n.) The second, or middle, region of the body of a crustacean, arachnid, or other articulate animal. In the case of decapod Crustacea, some writers include under the term thorax only the three segments bearing the maxillipeds; others include also the five segments bearing the legs. See Illust. in Appendix..

Tympanohyal :: Tympanohyal (n.) The proximal segment in the hyoidean arch, becoming a part of the styloid process of the temporal bone in adult man..

Trunk :: Trunk (n.) That segment of the body of an insect which is between the head and abdomen, and bears the wings and legs; the thorax; the truncus..

Clitellus :: Clitellus (n.) A thickened glandular portion of the body of the adult earthworm, consisting of several united segments modified for reproductive purposes..

Flanch :: Flanch (n.) A bearing consisting of a segment of a circle encroaching on the field from the side.

Prothorax :: Prothorax (n.) The first or anterior segment of the thorax in insects. See Illusts. of Butterfly and Coleoptera.

Prescutum :: Prescutum (n.) The first of the four pieces composing the dorsal part, or tergum, of a thoracic segment of an insect. It is usually small and inconspicuous..

Trilobite :: Trilobite (n.) Any one of numerous species of extinct arthropods belonging to the order Trilobita. Trilobites were very common in the Silurian and Devonian periods, but became extinct at the close of the Paleozoic. So named from the three lobes usually seen on each segment..

Article :: Article (n.) One of the segments of an articulated appendage.

Xiphisternum :: Xiphisternum (n.) The posterior segment, or extremity, of the sternum; -- sometimes called metasternum, ensiform cartilage, ensiform process, or xiphoid process..

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..

Trisected :: Trisected (a.) Divided into three parts or segments by incisions extending to the midrib or to the base; -- said of leaves.

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

Segment :: Segment (n.) A segment gear.

Annelida :: Annelida (n. pl.) A division of the Articulata, having the body formed of numerous rings or annular segments, and without jointed legs. The principal subdivisions are the Chaetopoda, including the Oligochaeta or earthworms and Polychaeta or marine worms; and the Hirudinea or leeches. See Chaetopoda..

Mesosternum :: Mesosternum (n.) The ventral piece of the middle segment of the thorax in insects.

Syzygy :: Syzygy (n.) Any one of the segments of an arm of a crinoid composed of two joints so closely united that the line of union is obliterated on the outer, though visible on the inner, side..

Two-cleft :: Two-cleft (a.) Divided about half way from the border to the base into two segments; bifid.

Phalangoidea :: Phalangoidea (n. pl.) A division of Arachnoidea, including the daddy longlegs or harvestman (Phalangium) and many similar kinds. They have long, slender, many-jointed legs; usually a rounded, segmented abdomen; and chelate jaws. They breathe by tracheae. Called also Phalangides, Phalangidea, Phalangiida, and Opilionea..

Sweep :: Sweep (n.) The mold of a ship when she begins to curve in at the rungheads; any part of a ship shaped in a segment of a circle.

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