fossilise

Definitions of fossilise
1

v convert to a fossil

Synonyms:
fossilize
Types:
lapidify, petrify
change into stone
Type of:
convert
change the nature, purpose, or function of something

v become mentally inflexible

Synonyms:
fossilize
Type of:
age, get on, maturate, mature, senesce
grow old or older

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