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• equi
  equi

  noun

  equi NP deletion.
• equi-
  equi-

  a combining form meaning “equal,” used in the formation of compound words.
• equi–
  equi–

  A prefix that means “equal” or “equally,” as in equidistant.

equi

¹ American  

[ek-wee] / ˈɛk wi /

noun

Linguistics.

1. equi NP deletion.

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equi- ² American  

1. a combining form meaning “equal,” used in the formation of compound words.

   equimolecular.

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equi- British  

combining form

1. equal or equally

   equidistant

   equilateral

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equi– Scientific  

1. A prefix that means “equal” or “equally,” as in equidistant.

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Etymology

Origin of equi-

Middle English < Latin aequi-, combining form representing aequus equal

Example Sentences

In late March, a facility in Wyoming was closed and an adoption event for wild horses was postponed because some animals developed Streptococcus equi, a bacterial infection similar to strep throat.

From New York Times • Apr. 28, 2022

More specifically, they were guinea pigs infected with a bacteria known as Streptococcus equi subspecies zooepidemicus.

From US News • Dec. 16, 2014

On Blepharcorys equi, sp. nov., a New Ciliate from the Caecum of the Horse, by Irwin C. Schumacher.

From The Subspecies of the Mountain Chickadee by Grinnell, Joseph