fossilize
verb /ˈfɒsəlaɪz/
  /ˈfɑːsəlaɪz/
(British English also fossilise)
 Verb Forms
| present simple I / you / we / they fossilize |  /ˈfɒsəlaɪz/  /ˈfɑːsəlaɪz/ | 
| he / she / it fossilizes |  /ˈfɒsəlaɪzɪz/  /ˈfɑːsəlaɪzɪz/ | 
| past simple fossilized |  /ˈfɒsəlaɪzd/  /ˈfɑːsəlaɪzd/ | 
| past participle fossilized |  /ˈfɒsəlaɪzd/  /ˈfɑːsəlaɪzd/ | 
| -ing form fossilizing |  /ˈfɒsəlaɪzɪŋ/  /ˈfɑːsəlaɪzɪŋ/ | 
- [transitive, usually passive, intransitive] fossilize (something) to make an animal or a plant become a fossil; to become a fossil- The bones have been fossilized and beautifully preserved.
- Flowers do not readily fossilize.
 
- [intransitive, transitive] fossilize (somebody/something) (disapproving) to become, or make somebody/something become, fixed and unable to change or develop