Definition of "petrifaction"

An Indian cabinet, consisting of a small but choice collection of petrefactions and fossils, was placed in a recess at the bottom of the room; a few paintings and portraits from the pencil of the most eminent artists adorned the walls.

1838, [Letitia Elizabeth] Landon (indicated as editor), chapter VII, in Duty and Inclination: […], volume III, London: Henry Colburn, […], page 75

The crisp leaves of holly, mistletoe, and ivy reflected back the light, as if so many little mirrors had been scattered there; and such a mighty blaze went roaring up the chimney, as that dull petrifaction of a hearth had never known in Scrooge's time, or Marley's, or for many and many a winter season gone.

1843 December 19, Charles Dickens, “Stave Three. The Second of the Three Spirits.”, in A Christmas Carol. In Prose. Being a Ghost Story of Christmas, London: Chapman & Hall, […], page 77