Meaning of trimetrogon

tri•met•ro•gon

Pronunciation: (trī-me'tru-gon"), [key]
— adj.
  1. of or pertaining to a system of aerial photography using three cameras, one pointed directly downward and the others at 60° to it.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.