petrific
/pɪˈtrɪfɪk/Now rare
adjective
1Having the quality of petrifying or turning into stone; causing petrifaction; (Medicine ) †causing the formation of a calculus ( obsolete ).
2Petrified, stony.
Origin
Mid 17th century; earliest use found in John Milton (1608–1674), poet and polemicist. From post-classical Latin petrificus causing petrifaction from classical Latin petra rock, stone + -ficus.