/ Dictionary / Index R Rayleigh wave: Meaning and Definition of Find definitions for: Ray'leigh wave" Pronunciation: [key] — Mech., Geol. Mech.,Geol. a wave along the surface of a solid, elastic body, esp. along the surface of the earth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Rayleigh scattering rayless Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language