a. and sb. ? Obs. [ad. L. lapidescent-em, pres. pple. of lapidescĕre to become stony, f. lapid-, lapis stone.] a. adj. That is in process of becoming stone; having a tendency to solidify into stone. Said chiefly of ‘petrifying’ waters and the salts dissolved or suspended in them. b. sb. A ‘lapidescent’ substance.

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1644.  Evelyn, Mem. (1857), I. 77. The drops meeting with some lapidescent matter, it converts them into a hard stone. Ibid. (1675), Terra (1676), 42. Worm-casts hardened by the air and a certain lapidescent succus, or spirit, which it meets with.

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1694.  Salmon, Bate’s Dispens. (1713), 62/2. Whence the Stone and Gravel, and the lapidescent Concretions in the Gout are produc’d.

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1727–41.  Chambers, Cycl., Lapidescent Waters or Springs.

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176[?].  Ellis, in Phil. Trans., LVII. 406. All of them are very distinct … from all vegetables, on account of their lapidescent substance.

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1811.  K. Macleay, Spar Cave, 62. This lapidescent process is perpetually going forward.

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1828–97.  Webster, Lapidescent, sb., Any substance which has the quality of petrifying a body.

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