[{"Bold_text": "verb (used with object)", "List Items": ["Geology.to convert into a fossil ;replace organic with mineral substances in the remains of an organism.", "to change as if into mere lifeless remains or traces of the past.", "to make rigidly antiquated:Time has fossilized such methods."]}, {"Bold_text": "verb (used without object)", "List Items": ["to become a fossil or like a fossil:The plant fossilized in comparatively recent geologic time.", "Linguistics.(of a linguistic form, feature, rule, etc.) to become permanently established in the interlanguage of a second-language learner in a form that is deviant from the target-language norm and that continues to appear in performance regardless of further exposure to the target language."]}]