/ Dictionary / Index S spectra yellow: Meaning and Definition of Find definitions for: spec'tra yel'low Pronunciation: [key] a vivid yellow color. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spectral type spectre Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language