Lap`i*des"cent (?), a. [L.
lapidescens, p. pr. of lapidescere to become stone, fr.
lapis, -idis, stone: cf. F. lapidescent.]
Undergoing the process of becoming stone; having the capacity of
being converted into stone; having the quality of petrifying
bodies.
Lap"i*des"cent, n. Any substance
which has the quality of petrifying other bodies, or of converting or
being converted into stone.