What's the verb for osseins? Here's the word you're looking for.
ossify
(transitive) To transform (or cause to transform) from a softer animal substance into bone; particularly the processes of growth in humans and animals.
“The joint between the incus and stapes is likewise a cartilaginous joint, with a tendency to ossify in older humans.”
“One must ensure that the implementation of current strategies does not ossify the organization to such an extent that future strategic adaptation becomes impossible.”
“Possession of absolute knowledge would ossify the human spirit, quenching human creativity.”
“It has become a corrupt text, with countless additions, cuts and changes ossifying into tradition over the years.”
“It is capable of continuous creativity rather than, like other civilizations, ossifying and losing the capacity of creative adjustment to new challenges.”
“Osseous lesions in the maxilla can represent ossifying fibroma, fibrous dysplasia, amelogenesis imperfecta, or osteogenesis imperfecta.”
