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specular

[spek-yuh-ler] /ˈspɛk yə lər/
adjective
1.
pertaining to or having the properties of a mirror.
2.
pertaining to a speculum.
3.
Optics. (of reflected light) directed, as from a smooth, polished surface (opposed to diffuse).
Origin of specular
1570-1580
1570-80; < Latin speculāris, equivalent to specul(um) a mirror (spec(ere) to look, regard + -ulum instrumental suffix; see -ule) + -āris -ar1
Related forms
specularly, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for specular

specular

/ˈspɛkjʊlə/
adjective
1.
of, relating to, or having the properties of a mirror: specular reflection
2.
of or relating to a speculum
Derived Forms
specularly, adverb
Word Origin
C16: from Latin speculāris, from speculum a mirror, from specere to look at
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for specular
adj.

1570s, of mirrors and glass, from Latin specularis, from speculum (see speculum). Of sight or vision, from 1650s, from Latin speculari "to spy" (see speculation).

Online Etymology Dictionary, © 2010 Douglas Harper
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