from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. the process of replacing the organic residues of plants (and animals) with insoluble salts, the original shape and topography being retained
- n. obduracy; callousness
from the GNU version of the Collaborative International Dictionary of English
- n. See petrifaction.
- n. Fig.: Obduracy; callousness.
from The Century Dictionary and Cyclopedia
- n. Same as petrifaction.
- n. Obduracy; callousness.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the process of turning some plant material into stone by infiltration with water carrying mineral particles without changing the original shape
From Greek πέτρα "petra" (rock). (Wiktionary)