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The Collaborative International Dictionary
Lapidific

Lapidific \Lap`i*dif"ic\, Lapidifical \Lap`i*dif"ic*al\, a. [L. lapis, -idis, stone + facere to make: cf. F. lapidifique.] Forming or converting into stone.

Wiktionary
lapidific

a. Forming or converting into stone; petrifying.