lith•oPronunciation: (lith'ō), [key]
—n., pl. lith•os,
—adj., v., lith•oed, lith•o•ing.
a combining form meaning “stone,” used in the formation of compound words: lithography; lithonephrotomy. Also, esp. before a vowel,lith-.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.