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astigmatoscope

American

[as-tig-mat-uh-skohp] / ˌæs tɪgˈmæt əˌskoʊp /

Also astigmoscope

noun

Ophthalmology.

an instrument for determining the presence and severity of astigmatism.

Etymology

Origin of astigmatoscope

astigmat(ism) + -o- + -scope

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.