/ Dictionary / Index K Knoop scale: Meaning and Definition of Find definitions for: Knoop' scale" Pronunciation: (np), [key] a scale of hardness based on the indentation made in the material to be tested by a diamond point. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. knoll knop 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