/ Dictionary / Index K Kundt tube: Meaning and Definition of Find definitions for: Kundt' tube" Pronunciation: (koont), [key] — Physics. Physics. a gas-filled tube used to measure the speed of sound: when a membrane at one end is vibrated at a frequency that produces standing waves, a layer of powder forms lumps at the nodes. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. kundalini Kung Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language