DuckCorp Dico

Found one definition

1.                 From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
                   
   
   
                   
                     
   trigonometry /tɹˌɪɡənˈɒmətɹi/
   Dreieckslehre <fem>, Trigonometrie <fem> [math.]
      Synonym: trig
    see: plane trigonometry, spherical trigonometry