trigone

[ trahy-gohn ]
/ ˈtraɪ goʊn /

noun

Also trigonum. Anatomy.
  1. a triangular part or area.
  2. the area on the floor of the urinary bladder between the opening of the urethra in front and the two ureters at the sides.
Botany. a thickened area where three or more plant cells come together.

Origin of trigone

1825–35; < French < Latin trigōnum triangle; see trigon
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for trigone

Medicine definitions for trigone

trigone

[ trīgōn′ ]

n.

A triangle or trigonum.
The first three dominant cusps of an upper molar tooth.

Related forms

tri•gonal adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.