Pronunciation: /daɪ/ Explain

di- is a prefix meaning two. Some math words that contain this prefix are:

Diagonal of a polygon
diagonal of a matrix see Diagonal of a Matrix
diameter see Diameter of a circle
diametrically opposed see Antipodal Points
Dihedral Angle
Table 1: Words containing prefix di-.


  1. McAdams, David E.. All Math Words Dictionary, di-. 2nd Classroom edition 20150108-4799968. pg 59. Life is a Story Problem LLC. January 8, 2015. Buy the book

Cite this article as:

McAdams, David E. Di. 12/21/2018. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/d/di.html.

Revision History

12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
7/4/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
1/23/2010: Added "References". (McAdams, David E.)
1/28/2009: Initial version. (McAdams, David E.)

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