1. preserved as a fossil; turned into stone over millions of years
Usage: British spelling
2. extremely old-fashioned or outdated; resistant to change
Usage: figurative

Examples

• The fossilised dinosaur bones were discovered in the desert.
• Scientists studied the fossilised remains of ancient sea creatures.
• The museum displayed fossilised tree trunks from prehistoric forests.
• His fossilised attitudes made it difficult for him to accept new ideas.
• The company’s fossilised management structure needed modernization.
• She criticized the fossilised traditions that prevented progress.