OSSIFY

[verb] [formal] [disapproving] - (of habits or ideas) to (cause to) become fixed and unable to changeYears of easy success had ossified the company's thinking. [T]This is a broadcast for anyone whose musical preferences ossified a decade before the Beatles. [I](specialized) If tissue ossifies, it hardens and changes into bone.A child's cartilage starts to ossify at a very young age.