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cubitus

[kyoo-bi-tuh s] /ˈkyu bɪ təs/
noun, plural cubiti
[kyoo-bi-tahy] /ˈkyu bɪˌtaɪ/ (Show IPA)
1.
a longitudinal vein in the rear portion of the wing of an insect.
2.
Anatomy.
  1. the forearm.
  2. Now Rare. the ulna.
Origin
1820-1830
1820-30; < Neo-Latin, Latin, variant of cubitum cubit
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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cubitus in Medicine

cubitus cu·bi·tus (kyōō'bĭ-təs)
n. pl. cubitus

  1. See elbow.

  2. See ulna.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for cubitus

cubit

unit of linear measure used by many ancient and medieval peoples. It may have originated in Egypt about 3000 BC; it thereafter became ubiquitous in the ancient world. The cubit, generally taken as equal to 18 inches (457 mm), was based on the length of the arm from the elbow to the tip of the middle finger and was considered the equivalent of 6 palms or 2 spans. In some ancient cultures it was as long as 21 inches (531 mm).

Learn more about cubit with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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