trinocular

trinocular [trahy-nok-yuh-ler] WORD ORIGIN adjective Microscopy. of or relating to a binocular microscope equipped with a third lens system for photographic recording. Liberaldictionary.com

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Origin of trinocular First recorded in 1955–60; tri- + (bi)nocular Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019 British Dictionary definitions for trinocular trinocular adjective 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