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focometer

[ foh-kom-i-ter ]
/ foʊˈkɒm ɪ tər /
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noun Optics.
an instrument for measuring the focal length of a lens or other optical system.
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Origin of focometer

First recorded in 1850–55; foc(us) + -o- + -meter

Words nearby focometer

focal segmental glomerulosclerosis, focal seizure, focal seizure disorder, Foch, foci, focometer, Focsani, fo'c's'le, focus, focused strategy, focus group
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

British Dictionary definitions for focometer

focometer
/ (fəʊˈkɒmɪtə) /
noun
an instrument for measuring the focal length of a lens
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
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