DIOPTRE
diopter, dioptre
(noun) 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
Source: WordNet® 3.1
Noun
dioptre (plural dioptres)
Alternative spelling of diopter
Anagrams
• diopter, peridot, periodt, proetid, proteid, protide, pterido-, pteroid, reptoid
Source: Wiktionary
Di*op"tre, n. Etym: [F. See 2d Dioptric.] (Optics)
Definition: A unit employed by oculists in numbering glasses according to the metric system; a refractive power equal to that of a glass whose principal focal distance is one meter.
Source: Webster’s Unabridged Dictionary 1913 Edition
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BACKFIRE
(verb) come back to the originator of an action with an undesired effect; “Your comments may backfire and cause you a lot of trouble”; “the political movie backlashed on the Democrats”
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