dorsa

dorsum

[dawr-suhm]
noun, plural dorsa [dawr-suh] . Anatomy, Zoology.
1.
the back, as of the body.
2.
the back or outer surface of an organ, part, etc.

Origin:
1775–85; < Latin

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World English Dictionary
dorsum (ˈdɔːsəm)
 
n , pl -sa
1.  a technical name for the back
2.  any analogous surface: the dorsum of the hand
 
[C18: from Latin, literally: back]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

dorsum dor·sum (dôr'səm)
n. pl. dor·sa (-sə)

  1. The back.

  2. The upper, outer surface of an organ, an appendage, or a part.

The American Heritage® Stedman's Medical Dictionary
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