Pronunciation: /hæf/ Explain

Half of something is one of two equal parts of that thing. Half of two apples is one apple. Half of 20 students is 10 students. Half is written in numeric notation as 1/2 or 1/2.

To halve something means to divide a geometric figure into two equal parts, or to divide a value by 2.

A prefix meaning half is hemi-. For example, hemisphere means exactly half of a sphere.


  1. McAdams, David E.. All Math Words Dictionary, half. 2nd Classroom edition 20150108-4799968. pg 88. Life is a Story Problem LLC. January 8, 2015. Buy the book

Cite this article as:

McAdams, David E. Half. 4/21/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. https://www.allmathwords.org/en/h/half.html.

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Revision History

4/21/2019: Update equations and expressions to new format. (McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
7/16/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
5/5/2011: Initial version. (McAdams, David E.)

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