trigone

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

Origin:
1825–35; < French < Latin trigōnum triangle; see trigon

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American Heritage
Medical Dictionary

trigone tri·gone (trī'gōn')
n.

  1. A triangle or trigonum.

  2. The first three dominant cusps of an upper molar tooth.


tri·go'nal adj.
The American Heritage® Stedman's Medical Dictionary
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Example sentences
Two of the openings are from the ureters and form the base of the trigone.
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