a combining form meaning “equal,” used in the formation of compound words: equimolecular.
Is An “Equinox” The Same As A “Solstice”?The word equinox comes from Latin and means "equality of night and day." So ... what's a solstice then?
English Affixes From A To Z: A One-Stop List Of Suffixes, Prefixes, and Combining FormsIn English, we love to make new words by adding all sorts of bits to the front and back of existing terms. These are called affixes, and they are added to the base or stem of a word. When attached to the end of word, the affix is called a suffix. And to the beginning? A prefix.
Origin of equi-
Middle English < Latin aequi-, combining form representing aequus equal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for equi-
equal or equallyequidistant; equilateral
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
Science definitions for equi-
A prefix that means equal or equally, as in equidistant.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.