hemi-

hemi-

a combining form meaning “half,” used in the formation of compound words: hemimorphic.

Origin:
< Greek hēmi- half; cognate with Latin sēmi- semi-

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Collins
World English Dictionary
hemi-
 
prefix
demi- Compare semi- half: hemicycle; hemisphere
 
[from Latin, from Greek hēmi-]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

hemi-
prefix meaning "half," from Gk. hemi-, from PIE base *semi-, which is the source of Skt. sami, L. semi-, O.H.G. sami- "half," and O.E. sam- (see sandblind).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

hemi- pref.
Half: hemicardia.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
hemi-  
A prefix meaning "half," as in hemisphere, half a sphere.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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