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bisect

[verb bahy-sekt, bahy-sekt; noun bahy-sekt]
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verb (used with object)
  1. to cut or divide into two equal or nearly equal parts.
  2. Geometry. to cut or divide into two equal parts: to bisect an angle.
  3. to intersect or cross: the spot where the railroad tracks bisect the highway.
verb (used without object)
  1. to split into two, as a road; fork: There's a charming old inn just before the road bisects.
noun
  1. Also called split. Philately. a portion of a stamp, usually half, used for payment of a proportionate amount of the face value of the whole stamp.

Origin of bisect

1640–50; bi-1 + -sect < Latin sectus, past participle of secāre to cut, sever; see section
Related formsbi·sec·tion, nounbi·sec·tion·al, adjectivebi·sec·tion·al·ly, adverb
Can be confusedbisect dissect
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for bisect

bisect

verb
  1. (tr) maths to divide into two equal parts
  2. to cut or split into two
Derived Formsbisection (baɪˈsɛkʃən), noun

Word Origin

C17: bi- 1 + -sect from Latin secāre to cut
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for bisect

v.

"to cut in two," 1640s, from Modern Latin bisectus, from Latin bi- "two" (see bi-) + secare "to cut" (see section (n.)). Related: Bisected; bisecting.

Online Etymology Dictionary, © 2010 Douglas Harper

bisect in Science

bisect

[bīsĕkt′, bī-sĕkt]
  1. To cut or divide into two parts, especially two equal parts.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.