bi·​sect | \ˈbī-ˌsekt, bī-ˈsekt\
bisected; bisecting; bisects

Definition of bisect 

transitive verb

: to divide into two usually equal parts

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Other Words from bisect

bisection \ˈbī-​ˌsek-​shən, bī-​ˈsek-​ \ noun
bisectional \ˈbī-​ˌsek-​shnəl, -​shə-​nᵊl \ adjective
bisectionally adverb

Synonyms for bisect


cross, cut, intersect

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Examples of bisect in a Sentence

Draw a line that bisects the angle. The city is bisected by the highway.

Recent Examples on the Web

Golfing in the Great Glen Built in the early 1800s, the Caledonian Canal bisects Scotland from northeast to southwest, connecting scenic lochs—including the possibly serpent-harboring Loch Ness—and cutting through the Great Glen. Sara Tucker, WSJ, "European Barge Cruises That Are Anything But Boring," 6 Sep. 2018 Smith’s face, as usual, was bisected by an incandescent smile. Joe Drape, New York Times, "At 52, Mike Smith Has the Ride of His Life," 9 June 2018 To the west, the boundary juts across the grounds of an elementary school, bisects the Kingswood Lane cul-de-sac and heads to the north of a Turkey Hill market before plunging south again, all to exclude the Democratic-leaning town of Coatesville. Trip Gabriel, New York Times, "In a Comically Drawn Pennsylvania District, the Voters Are Not Amused," 26 Jan. 2018 His brow is bisected by a deep furrow, and his former prettiness has weathered into something much more interesting. Paul Schrader, New York Times, "Review: ‘First Reformed’ Is an Epiphany. Ethan Hawke Is, Too.," 17 May 2018 The two Korean leaders smiled and shook hands across a low, 20-inch-wide concrete slab that marks the border bisecting Panmunjom. David E. Sanger,, "Leaders of Koreas set to talk," 26 Apr. 2018 Originally the house of Ray Lyman Wilbur, Stanford's president in 1915, the estate sits on a high hill where two of Stanford's main roads bisect; from a back window, rolling green hills give way to the horizon. Arielle Pardes, WIRED, "The Aural Magic of Stanford's Laptop Orchestra," 8 June 2018 The border between California and Nevada bisects Lake Tahoe. Robyn A. Friedman, WSJ, "New Tax Laws Have Home Buyers Checking New Places," 7 June 2018 The famous Great Migration, an annual trek of 2 million animals through the Serengeti-Mara ecosystem, bisects the reserve annually. Julian Harrison, Town & Country, "How to Plan a Trip to Africa," 5 Oct. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'bisect.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of bisect

circa 1645, in the meaning defined at transitive sense

History and Etymology for bisect

bi- entry 1 + intersect

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Statistics for bisect

Last Updated

24 Nov 2018

Look-up Popularity

Time Traveler for bisect

The first known use of bisect was circa 1645

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More Definitions for bisect



English Language Learners Definition of bisect

: to divide (something) into two equal parts


bi·​sect | \ˈbī-ˌsekt \
bisected; bisecting

Kids Definition of bisect

1 : to divide into two equal parts

2 : intersect

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More from Merriam-Webster on bisect

Rhyming Dictionary: Words that rhyme with bisect

Thesaurus: All synonyms and antonyms for bisect

Spanish Central: Translation of bisect

Nglish: Translation of bisect for Spanish Speakers

Britannica English: Translation of bisect for Arabic Speakers

Comments on bisect

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a nest or breeding place

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