/ Dictionary / Index S specular: Meaning and Definition of Find definitions for: spec•u•lar Pronunciation: (spek'yu-lur), [key] — adj. pertaining to or having the properties of a mirror. pertaining to a speculum. (of reflected light) directed, as from a smooth, polished surface (opposed to diffuse). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: specular (Thesaurus) spectrum analysis speculate Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language