Breadcrumb Home > Dictionary > Index S sonal: Meaning and Definition of Find definitions for: so•nal Pronunciation: (sōn'l), [key] — adj. pertaining to sound; sonic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. son sonance ✖ Related Content Daily Word Quiz: ultimathule Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language