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- Segment - n. - One of the parts into which any body naturally separates or is divided; a part divided or cut off; a section; a portion; as, a segment of an orange; a segment of a compound or divided leaf.
- 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.
- Segment - n. - A piece in the form of the sector of a circle, or part of a ring; as, the segment of a sectional fly wheel or flywheel rim.
- Segment - n. - A segment gear.
- Segment - n. - One of the cells or division formed by segmentation, as in egg cleavage or in fissiparous cell formation.
- Segment - n. - One of the divisions, rings, or joints into which many animal bodies are divided; a somite; a metamere; a somatome.
- Segment - v. i. - To divide or separate into parts in growth; to undergo segmentation, or cleavage, as in the segmentation of the ovum.
- Segmental - a. - Relating to, or being, a segment.
- Segmental - a. - Of or pertaining to the segments of animals; as, a segmental duct; segmental papillae.
- Segmental - a. - Of or pertaining to the segmental organs.
- Segmentation - n. - The act or process of dividing into segments; specifically (Biol.), a self-division into segments as a result of growth; cell cleavage; cell multiplication; endogenous cell formation.
- Segmented - a. - Divided into segments or joints; articulated.
- Propodium - n. - The segment which forms the posterior part of the thorax of a hymenopterous insect.
- Metathorax - n. - The last or posterior segment of the thorax in insects. See Illust. of Coleoptera.
- Felly - n. - The exterior wooden rim, or a segment of the rim, of a wheel, supported by the spokes.
- Alitrunk - n. - The segment of the body of an insect to which the wings are attached; the thorax.
- 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.
- Presternum - n. - The anterior segment of the sternum; the manubrium.
- Prothorax - n. - The first or anterior segment of the thorax in insects. See Illusts. of Butterfly and Coleoptera.
- Epencephalon - n. - The segment of the brain next behind the midbrain, including the cerebellum and pons; the hindbrain. Sometimes abbreviated to epen.
- Ennation - n. - The ninth segment in insects.
- Femur - n. - The proximal segment of the hind limb containing the thigh bone; the thigh. See Coxa.
- Division - n. - The portion separated by the divining of a mass or body; a distinct segment or section.
- Thigh - n. - The proximal segment of the hind limb between the knee and the trunk. See Femur.
- Segment - n. - A piece in the form of the sector of a circle, or part of a ring; as, the segment of a sectional fly wheel or flywheel rim.
- Prosencephalon - n. - The anterior segment of the brain, including the cerebrum and olfactory lobes; the forebrain.
- Manitrunk - n. - The anterior segment of the thorax in insects. See Insect.
- 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.
- Setigerous - a. - Covered with bristles; having or bearing a seta or setae; setiferous; as, setigerous glands; a setigerous segment of an annelid; specifically (Bot.), tipped with a bristle.
- Procerite - n. - The segment next to the flagellum of the antennae of Crustacea.
- Interhyal - a. - Of or pertaining to a segment sometimes present at the proximal end of the hyoidean arch.
- Epibranchial - a. - Pertaining to the segment between the ceratobranchial and pharyngobranchial in a branchial arch.
- Mesosternum - n. - The ventral piece of the middle segment of the thorax in insects.
- 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.
- Tympanohyal - n. - The proximal segment in the hyoidean arch, becoming a part of the styloid process of the temporal bone in adult man.
- Manus - n. - The distal segment of the fore limb, including the carpus and fore foot or hand.
- Segment - n. - One of the parts into which any body naturally separates or is divided; a part divided or cut off; a section; a portion; as, a segment of an orange; a segment of a compound or divided leaf.