dioptometer

[ dahy-op-tom-i-ter ]
/ ˌdaɪ ɒpˈtɒm ɪ tər /

noun Ophthalmology.

an instrument for measuring the refraction of the eye.

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Origin of dioptometer

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for dioptometer

dioptometer
/ (ˌdaɪɒpˈtɒmɪtə) /

noun

an instrument for measuring ocular refraction

Derived forms of dioptometer

dioptometry, noun

Word Origin for dioptometer

from di- ² + opt (ic) + meter
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