/ Dictionary / Index S surface of light and shade: Meaning and Definition of Find definitions for: sur'face of light' and shade' Pronunciation: [key] (in architectural shades and shadows) a surface in a plane tangent to the parallel rays from the theoretical light source, treated as a shade surface. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. surface noise surface of projection Related Content Daily Word Quiz: candid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language