Change Into Rock Such as Limestone
This page is the CodyCross answer for the clue below from Cats, Group 1721, Puzzle 1 (Furry Friends).
Question is: Change Into Rock Such as Limestone
and the answer is: CALCIFY
Word Meaning:
CALCIFY — (transitive, intransitive) To make or become hard and stony by impregnating with calcium salts.
Definitions from Wiktionary.