/ Dictionary / Index L lyso-: Meaning and Definition of Find definitions for: lyso- Pronunciation: [key] var. of Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Lysithea lysocline 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