FOSSILIZE
fossilize, fossilise
(verb) become mentally inflexible
fossilize, fossilise
(verb) convert to a fossil; “The little animals fossilized and are now embedded in the limestone”
Source: WordNet® 3.1
Etymology
Verb
fossilize (third-person singular simple present fossilizes, present participle fossilizing, simple past and past participle fossilized)
(transitive) to make into a fossil
(intransitive) to become a fossil
(figurative, by extension, intransitive) to become inflexible or outmoded
(figurative, by extension, transitive) To make antiquated, rigid, or fixed; to deaden.
Synonyms
• (To become a fossil): fossilate (dated), fossilify (dated)
Source: Wiktionary
Fos"sil*ize, v. t. [imp. & p. p. Fossilized; p. pr. & vb. n.
Fossilizing.] Etym: [Cf. F. fossiliser.]
1. To convert into a fossil; to petrify; as, to fossilize bones or
wood.
2. To cause to become antiquated, rigid, or fixed, as by
fossilization; to mummify; to deaden.
Ten layers of birthdays on a woman's head Are apt to fossilize her
girlish mirth. Mrs. Browning.
Fos"sil*ize, v. i.
1. To become fossil.
2. To become antiquated, rigid, or fixed, beyond the influence of
change or progress.
Source: Webster’s Unabridged Dictionary 1913 Edition