Definition of segment

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segmental >

seg·ment    (sgmnt) KEY 

NOUN:

1. Any of the parts into which something can be divided: segments of the community; a segment of a television program.
2. Mathematics
   1. The portion of a line between any two points on the line.
   2. The area bounded by a chord and the arc of a curve subtended by the chord.
   3. 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.
seg·ment·ed, seg·ment·ing, seg·ments (sg-mnt)

To divide or become divided into segments.

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ETYMOLOGY:
Latin segmentum, from secre, to cut; see sek- in Indo-European roots

OTHER FORMS:
segmen·tary  (-mn-tr) KEY (Adjective)