fossilize
1. [ verb ] convert to a fossil
Synonyms: fossilise
Examples:

"The little animals fossilized and are now embedded in the limestone"

Related terms: convert lapidify fossilization
2. [ verb ] become mentally inflexible
Synonyms: fossilise
Related terms: age fossilization
Similar spelling:   fossilized
  fossilise
  fossilised
  focalize
  fossilist
  fossil_copal