dioptre

di·op·ter

D d

Transcription

- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
- [dahy-op-ter]
- /daɪˈɒp tər/
- /daɪ.ˈɒp.tə(r)/

- US Pronunciation
- US IPA
- [dahy-op-ter]
- /daɪˈɒp tər/

Definitions of dioptre word

noun dioptre Optics. a unit of measure of the refractive power of a lens, having the dimension of the reciprocal of length and a unit equal to the reciprocal of one meter. Abbreviation: D. 1
noun dioptre an instrument, invented by Hipparchus, to measure the apparent diameter of the sun or moon or to estimate the size or elevation of distant objects. 1
noun dioptre Alternative spelling of diopter. 1
noun dioptre a unit for measuring the refractive power of a lens: the reciprocal of the focal length of the lens expressed in metres 0

See all 4 definitions of dioptre

Information block about the term

Origin of dioptre

First appearance:

before 1585

One of the 35% oldest English words

1585-95; < Latin dioptra < Greek: instrument for measuring height or levels, equivalent to di- di-3 + op- (for ópsesthai to see) + -tra noun suffix of means

Historical Comparancy

Parts of speech for Dioptre

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

Full grammatical hierarchy of Dioptre

dioptre popularity

A common word. It’s meaning is known to most children of preschool age. About 71% of English native speakers know the meaning and use the word.

According to our data about 71% of words is more used. This is a rare but used term. It occurs in the pages of specialized literature and in the speech of educated people.

dioptre usage trend in Literature

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