os·si·fy
–verb (used with object)
1. to convert into or cause to harden like bone.
–verb (used without object)
2. to become bone or harden like bone.
3. to become rigid or inflexible in habits, attitudes, opinions, etc.: a young man who began to ossify right after college.
Such as: The elderly WWII veteran's disparaging views of the japanese ossified through his years in the military (I think that's the right use of the word)
Post your own :)