To pronounce "diopter", say DIOPT-er — 2 syllables. Tap play below to hear it in four English accents, or practice it syllable by syllable.
diopter
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2
Syllables
7
Letters
DIOPT-er
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"diopter" has 2 syllables: diopt-er. It rhymes with dioptre, if that helps it stick.
Sounds exactly like: dioptre — easy to mix up when writing.
noun
Practicing rhymes trains the same ending sounds.
"Diopter" has 2 syllables: diopt · er.
Diopter: A unit of measure of the power of a lens or mirror, equal to the reciprocal of its focal length in meters. Myopia is diagnosed and measured in diopters.
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