/ Dictionary / Index A advection fog: Meaning and Definition of Find definitions for: advec'tion fog" Pronunciation: [key] — Meteorol. Meteorol. fog caused by the movement of warm, moist air over a cold surface. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. advection advent Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language