Definition of optometer in English:

optometer

noun ɒpˈtɒmɪtəɑpˈtɑmədər

An instrument for testing the refractive power of the eye.
Example sentencesExamples
- He immediately became hypermetropic (long sighted) in that eye, but using his optometer found ‘the same inequality in the horizontal and vertical refractions as without the water’.
- We have developed an optometer to measure the ocular astigmatism of human eyes and tested its performance.

Origin

Mid 18th century: from Greek optos 'seen' + -meter.

Rhymes

accelerometer, anemometer, barometer, gasometer, geometer, manometer, micrometer, milometer, olfactometer, pedometer, photometer, pyrometer, speedometer, swingometer, tachometer, thermometer

Definition of optometer in US English:

optometer

nounäpˈtämədərɑpˈtɑmədər

An instrument for testing the refractive power of the eye.
Example sentencesExamples
- He immediately became hypermetropic (long sighted) in that eye, but using his optometer found ‘the same inequality in the horizontal and vertical refractions as without the water’.
- We have developed an optometer to measure the ocular astigmatism of human eyes and tested its performance.

Origin

Mid 18th century: from Greek optos ‘seen’ + -meter.

单词	optometer
释义	Definition of optometer in English: optometer noun ɒpˈtɒmɪtəɑpˈtɑmədər An instrument for testing the refractive power of the eye. Example sentencesExamples He immediately became hypermetropic (long sighted) in that eye, but using his optometer found ‘the same inequality in the horizontal and vertical refractions as without the water’. We have developed an optometer to measure the ocular astigmatism of human eyes and tested its performance. Origin Mid 18th century: from Greek optos 'seen' + -meter. Rhymes accelerometer, anemometer, barometer, gasometer, geometer, manometer, micrometer, milometer, olfactometer, pedometer, photometer, pyrometer, speedometer, swingometer, tachometer, thermometer Definition of optometer in US English: optometer nounäpˈtämədərɑpˈtɑmədər An instrument for testing the refractive power of the eye. Example sentencesExamples He immediately became hypermetropic (long sighted) in that eye, but using his optometer found ‘the same inequality in the horizontal and vertical refractions as without the water’. We have developed an optometer to measure the ocular astigmatism of human eyes and tested its performance. Origin Mid 18th century: from Greek optos ‘seen’ + -meter.
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