Dictionary.com

dioptometer

[ dahy-op-tom-i-ter ]
/ ˌdaɪ ɒpˈtɒm ɪ tər /
Save This Word!
noun Ophthalmology.
an instrument for measuring the refraction of the eye.
QUIZ
CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?
There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?
Question 1 of 7
Which sentence is correct?
His boss, whom he admires, is waiting to meet with him about the big project.
His boss, who he admires, is waiting to meet with him about the big project.
TAKE THE QUIZ TO FIND OUT

Origin of dioptometer

di-3 + opt(ic) + -o- + -meter

Words nearby dioptometer

Diophantus, diopside, diopsimeter, dioptase, diopter, dioptometer, dioptre, dioptric, dioptrics, Dior, diorama
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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
FEEDBACK