trimetrogon

American  

[trahy-me-truh-gon] / traɪˈmɛ trəˌgɒn /

adjective

1. of or relating to a system of aerial photography using three cameras, one pointed directly downward and the others at 60° to it.

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trimetrogon British  

/ traɪˈmɛtrəˌɡɒn /

noun

1. 1. a method of aerial photography for rapid topographic mapping, in which one vertical and two oblique photographs are taken simultaneously

   2. ( as modifier )

      trimetrogon photography

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Etymology

Origin of trimetrogon

1940–45; tri- + Greek métro ( n ) measure + -gon

Example Sentences

The most important new invention is "trimetrogon" photography.

From Time Magazine Archive

The trimetrogon method, by making it possible to space charting flights 25 miles apart instead of only four to six, has enormously accelerated mapping.

From Time Magazine Archive