PETRIFICATION

noun
20 Scrabble
23 WWF
P 3
E 1
T 1
R 1
I 1
F 4
I 1
C 3
A 1
T 1
I 1
O 1
N 1

Definition

The process of replacing the organic residues of plants (and animals) with insoluble salts, the original shape and topography being retained

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