Definition of segment

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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..

Lern More About Segment

Cone :: Cone (v. t.) To render cone-shaped; to bevel like the circular segment of a cone; as, to cone the tires of car wheels..
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..
Blastocoele :: Blastocoele (n.) The cavity of the blastosphere, or segmentation cavity..
Prothorax :: Prothorax (n.) The first or anterior segment of the thorax in insects. See Illusts. of Butterfly and Coleoptera.
Protozoonite :: Protozoonite (n.) One of the primary, or first-formed, segments of an embryonic arthropod..
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..
Ectomere :: Ectomere (n.) The more transparent cells, which finally become external, in many segmenting ova, as those of mammals..
Leptocardia :: Leptocardia (n. pl.) The lowest class of Vertebrata, including only the Amphioxus. The heart is represented only by a simple pulsating vessel. The blood is colorless; the brain, renal organs, and limbs are wanting, and the backbone is represented only by a simple, unsegmented notochord. See Amphioxus..
Segmental :: Segmental (a.) Of or pertaining to the segmental organs.
Parieto- :: Parieto- () A combining form used to indicate connection with, or relation to, the parietal bones or the parietal segment of the skull; as, the parieto-mastoid suture..
Cant :: Cant (n.) A segment forming a side piece in the head of a cask.
Mesoscutum :: Mesoscutum (n.) The scutum or dorsal plate of the middle thoracic segment of an insect. See Illust. of Butterfly.
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..
Moonwort :: Moonwort (n.) Any fern of the genus Botrychium, esp. B. Lunaria; -- so named from the crescent-shaped segments of its frond..
Myriapoda :: Myriapoda (n. pl.) A class, or subclass, of arthropods, related to the hexapod insects, from which they differ in having the body made up of numerous similar segments, nearly all of which bear true jointed legs. They have one pair of antennae, three pairs of mouth organs, and numerous trachaae, similar to those of true insects. The larvae, when first hatched, often have but three pairs of legs. See Centiped, Galleyworm, Milliped..
Zoonite :: Zoonite (n.) One of the theoretic transverse divisions of any segmented animal.
Quinquefid :: Quinquefid (a.) Sharply cut about halfway to the middle or base into five segments; as, a quinquefid leaf or corolla..
Annulose :: Annulose (a.) Furnished with, or composed of, rings or ringlike segments; ringed..
Desegmentation :: Desegmentation (n.) The loss or obliteration of division into segments; as, a desegmentation of the body..
Xiphisternum :: Xiphisternum (n.) The posterior segment, or extremity, of the sternum; -- sometimes called metasternum, ensiform cartilage, ensiform process, or xiphoid process..
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