LITHIFY Meaning of LITHIFY in English [ 'lɪθɪfʌɪ ]■ verb ( lithifies , ~ing , lithified ) chiefly Geology transform into stone.Derivativeslithification noun OriginC19: from Gk lithos 'stone' + -fy . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004