trigone
suomi-englanti sanakirjatrigone englanniksi
One of the thickenings of the wall at the angles where several cells join.
{{quote-text|en|year=1992|author=Marie L. Hicks|title=Guide to the Liverworts of North Carolina|page=66
(RQ:Schuster Hepaticae)
A smooth triangular area on the inner surface of the bladder, bounded by the apertures of the ureters and urethra; a similar region of a valve
(adj form of)
(inflection of)