Try Our Apps


The Best Internet Slang


[bahy-sek-ter, bahy-sek-] /baɪˈsɛk tər, ˈbaɪ sɛk-/
noun, Geometry.
a line or plane that bisects an angle or line segment.
Origin of bisector
First recorded in 1860-65; bisect + -or2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
Cite This Source
Examples from the Web for bisector
Historical Examples
  • The bisector of an angle of a triangle divides the opposite side into segments which are proportional to the adjacent sides.

    The Teaching of Geometry David Eugene Smith
  • This proposition enables us to compute the length of a bisector of a triangle if the lengths of the sides are known.

    The Teaching of Geometry David Eugene Smith
British Dictionary definitions for bisector


noun (maths)
a straight line or plane that bisects an angle
a line or plane that bisects another line
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
Cite This Source
Word Origin and History for bisector

1821; agent noun from bisect.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for bisector

Some English speakers likely know this word

Word Value for bisector

Scrabble Words With Friends

Nearby words for bisector