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Meaning of trigone

tri•gone

Pronunciation: (trī'gōn), [key]
— n.
    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.
  1. a thickened area where three or more plant cells come together.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.