[ dawr-suh m ]
/ ˈdɔr səm /

noun, plural dor·sa [dawr-suh] /ˈdɔr sə/. Anatomy, Zoology.

the back, as of the body.
the back or outer surface of an organ, part, etc.

Origin of dorsum

Borrowed into English from Latin around 1775–85 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for dorsa


/ (ˈdɔːsəm) /

noun plural -sa (-sə) anatomy

a technical name for the back 1
any analogous surfacethe dorsum of the hand

Word Origin for dorsum

C18: from Latin, literally: back
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for dorsa


[ dôrsəm ]

n. pl. dor•sa (-sə)

The back.
The upper, outer surface of an organ, appendage, or part.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.