segmentseg·ment (s?g?m?nt)n.1. Any of the parts into which something can be divided: segments of the community; a segment of a television program.2. Mathematics a. The portion of a line between any two points on the line.b. The area bounded by a chord and the arc of a curve subtended by the chord.c. The portion of a sphere cut off by two parallel planes.3. Biology A clearly differentiated subdivision of an organism or part, such as a metamere.tr. & intr.v. (s?g-m?nt?) seg·ment·ed, seg·ment·ing, seg·ments To divide or become divided into segments.[Latin segmentum, from sec?re, to cut; see sek- in Indo-European roots.]seg?men·tar?y (-m?n-t?r??) adj.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.segment n 1. (Mathematics) maths a. a part of a line or curve between two pointsb. a part of a plane or solid figure cut off by an intersecting line, plane, or planes, esp one between a chord and an arc of a circle 2. one of several parts or sections into which an object is divided; portion 3. (Zoology) zoology any of the parts into which the body or appendages of an annelid or arthropod are divided 4. (Phonetics & Phonology) linguistics a speech sound considered in isolation vb to cut or divide (a whole object) into segments [C16: from Latin segmentum, from sec?re to cut] segmentary adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014seg?ment (n. ?s?g m?nt; v. ?s?g m?nt, s?g?m?nt) n. 1. one of the parts into which something is divided; a division, portion, or section. 2. Geom. a. a part cut off from a figure, esp. a circular or spherical one, by a line or plane. b. a finite section of a line. 3. an object, as a machine part, having the form of a segment or sector of a circle. v.t., v.i. 4. to separate or divide into segments. [1560?70;