lithifyPronunciation: /ˈlɪθɪfʌɪ/Definition of lithify verb (lithifies, lithifying, lithified) [with object] chiefly Geology transform (a sediment or other material) into stone: these sediments are lithified to form shales, limestones, and sandstonesDerivatives lithification noun Origin: late 19th century: from Greek lithos 'stone' + -fylithify in other Oxford dictionaries Definition of lithify in the US English dictionary
