trinocular

[trahy-nok-yuh-ler]

Origin of trinocular

First recorded in 1955–60; tri- + (bi)nocular
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British Dictionary definitions for trinocular

trinocular

adjective
  1. of or relating to a binocular microscope having a lens for photographic recording while direct visual observation is taking place

Word Origin for trinocular

C20: from tri- + (bi) nocular
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012