os·si·fy 
/ˈɑ:səˌfaɪ/ verb
os·si·fies; os·si·fied; os·si·fy·ing /ˈɑ:səˌfaɪ/ verb 1 formal + disapproving : to become or to cause something to become unable to change [no obj] ▪ Her opinions have ossified. [+ obj] ▪ an ossified social hierarchy ▪ ossified ideologies 2 technical : to become or to cause something to become hard like bone [no obj] ▪ The cartilage will ossify, becoming bone. [+ obj] ▪ a disease that ossifies the joints
— os·si·fi·ca·tion /ˌɑ:səfəˈkeɪʃən/ noun [noncount]
▪ intellectual ossification ▪ ossification of the cartilage
/ˌɑ:səfəˈkeɪʃən/ noun [noncount] ▪ intellectual ossification ▪ ossification of the cartilage
