/ Dictionary / Index S soft scale: Meaning and Definition of Find definitions for: soft' scale" Pronunciation: [key] any of numerous homopterous insect pests of the family Coccidae, as leafhoppers, aphids, and whiteflies, that are destructive to crops, shade and fruit trees, and various houseplants. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. soft rot soft science Related Content Daily Word Quiz: labyrinth Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language