quadri-
| a combining form meaning “four,” used in the formation of compound words: quadrilateral. |
Origin: < L; akin to
quattuor four 
quadri- or quadr- or quadra- or quadru- pref. Four: quadrilateral. Square: quadrate.
[Middle English, from Latin; see kwetwer- in Indo-European roots.] |
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary
quadri- or quadr-
pref.
Four: quadriplegia.
Square: quadrate.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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