dioptre

US diopter

/ (daɪˈɒptə) /

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noun

a unit for measuring the refractive power of a lens: the reciprocal of the focal length of the lens expressed in metres

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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.

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Derived forms of dioptre

dioptral, adjective

Word Origin for dioptre

C16: from Latin dioptra optical instrument, from Greek, from dia- through + opsesthai to see

Words nearby dioptre

diopside, diopsimeter, dioptase, diopter, dioptometer, dioptre, dioptric, dioptrics, Dior, diorama, diorite

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