dioptre
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dioptre
(daɪˈɒptə) ordiopter
n
(Units) a unit for measuring the refractive power of a lens: the reciprocal of the focal length of the lens expressed in metres
[C16: from Latin dioptra optical instrument, from Greek, from dia- through + opsesthai to see]
diˈoptral adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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Noun | 1. | dioptre - a unit of measurement of the refractive power of a lens which is equal to the reciprocal of the focal length measured in meters; used by oculists unit, unit of measurement - any division of quantity accepted as a standard of measurement or exchange; "the dollar is the United States unit of currency"; "a unit of wheat is a bushel"; "change per unit volume" |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
dioptre
, (US) dioptern → Dioptrie f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
di·op·ter
, dioptren. dioptría, unidad de medida de refracción de un lente.
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