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bisector

American  
[bahy-sek-ter, bahy-sek-] / baɪˈsɛk tər, ˈbaɪ sɛk- /

noun

Geometry.
  1. a line or plane that bisects an angle or line segment.


bisector British  
/ baɪˈsɛktə /

noun

  1. a straight line or plane that bisects an angle

  2. 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

Etymology

Origin of bisector

First recorded in 1860–65; bisect + -or 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

So, if double, angle is 60°. is the perpendicular bisector of so it cuts in half.

From Textbooks Dec. 1, 2021

Angle is double angle so its measure is 60°. is the perpendicular bisector of so it cuts in half.

From Textbooks Feb. 13, 2015

The bisector of an angle of a triangle divides the opposite side into segments which are proportional to the adjacent sides.

From The Teaching of Geometry by Smith, David Eugene

Clearly there will be only one such pair unless the perpendicular bisector of GG' coincides with the line AA'.

From An Elementary Course in Synthetic Projective Geometry by Lehmer, Derrick Norman

This proposition enables us to compute the length of a bisector of a triangle if the lengths of the sides are known.

From The Teaching of Geometry by Smith, David Eugene

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