[ verb bahy-sekt, bahy-sekt; noun bahy-sekt ]
/ verb baɪˈsɛkt, ˈbaɪ sɛkt; noun ˈbaɪ sɛkt /
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See synonyms for: bisect / bisected / bisection on Thesaurus.com

verb (used with object)

to cut or divide into two equal or nearly equal parts.
Geometry. to cut or divide into two equal parts: to bisect an angle.
to intersect or cross: the spot where the railroad tracks bisect the highway.

verb (used without object)

to split into two, as a road; fork: There's a charming old inn just before the road bisects.


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.



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Question 1 of 12
On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.

Origin of bisect

1640–50; bi-1 + -sect<Latin sectus, past participle of secāre to cut, sever; see section
bi·sec·tion, nounbi·sec·tion·al, adjectivebi·sec·tion·al·ly, adverb
bisect , dissect
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for bisect

/ (baɪˈsɛkt) /


(tr) maths to divide into two equal parts
to cut or split into two
bisection (baɪˈsɛkʃən), noun
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

Scientific definitions for bisect

[ bīsĕkt′, bī-sĕkt ]

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.
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