Ossify

From Latin os, ossis ("bone") + -ify

Full definition of ossify

(ambitransitive) To transform (or cause to transform) from a softer animal substance into bone; particularly the processes of growth in humans and animals.

1884, Arthur C. Cole, Studies in Microscopical Science, p. 35,..., nor do all bones of the same skeleton ossify during the samÐµ period of time.

(ambitransitive, animate) To become (or cause to become) inflexible and rigid in habits or opinions.

1996, Peter Schwartz (futurist), The Art of the Long View , p. 96,Before long, the entire organization ossifies.
2006, Michael S. Jones, Metaphysics of Religion: Lucian Blaga and Contemporary Philosophy , p. 79,Possession of absolute knowledge would ossify the human spirit, quenching human creativity;

(ambitransitive, inanimate) To grow (or cause to grow) formulaic and permanent.

1886, Karl Marx, translated by Samuel Moore, Capital, Volume I, ,This accidental repartition gets repeated, develops advantages of its own, and gradually ossifies into a systematic division of labour.
2001, Alain Finkielkraut, translated by Kevin O'Neill and David Suchoff, The Wisdom of Love , p. 55,Now, in turn, we apply a revolutionary critique that ... ossifies into a rhetoric to become "the monstrous Latin of a monstrous church."
2005, Michelle Goldberg, "The war on 'Munich'", Salon.com, December 20, 2005,The charge threatens to ossify into conventional wisdom before the movie's audience can get to theaters to see how misguided it is.

1850, Roxey Ann Caplin, Health and Beauty, ,The cartilages become brittle, and in many instances are ossified; the ligaments are rendered harder, but are less capable of resisting extension.