Longman Dictionary of Contemporary English homepage

Date: 1600-1700
Origin: bi- + -sect (as in intersect)

bisect

 verb
     
Related topics: Maths
bi‧sect [transitive]
HM formal to divide something into two equal parts:
A long cobbled street bisects the town from east to west.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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