/ Dictionary / Index S sounder: Meaning and Definition of Find definitions for: sound•er Pronunciation: (soun'dur), [key] — n. a person or thing that makes a sound or noise, or sounds something. an instrument for receiving telegraphic impulses that emits the sounds from which the message is read. sound•er Pronunciation: (soun'dur), [key] — n. a person or thing that sounds depth, as of water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sounder (Thesaurus) sound effect sound film Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language