/ Dictionary / Index S sonde: Meaning and Definition of Find definitions for: sonde Pronunciation: (sond), [key] — n. Rocketry. a rocket, balloon, or rockoon used as a probe for observing phenomena in the atmosphere. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sonatina sonderclass 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