Origin of trigonum
First recorded in 1720–30, trigonum is from the Latin word trigōnum triangle. See trigon
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Examples from the Web for trigonum
The front of the head is more inclined than that of trigonum (fig. 301).The Common Spiders of the United States
James Henry Emerton
- A triangular anatomical area.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.