/ Dictionary / Index D damping-off: Meaning and Definition of Find definitions for: damp•ing-off Pronunciation: (dam'ping-ôf', -of'), [key] — n. Plant Pathol. a disease of seedlings, occurring either before or immediately after emerging from the soil, characterized by rotting of the stem at soil level and eventual collapse of the plant, caused by any of several soil fungi. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: damping-off (Thesaurus) Dampier damp-mop Related Content Daily Word Quiz: prevalent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language