What do you mean by “ossified”?

Ossified is a term used to describe something that has become rigid and unchangeable over time. It can refer to an idea, a belief system, a tradition, or even an organization. It implies that something has become so entrenched and entrenched in its ways that it is unable to change or adapt to new circumstances. In other words, it has become "set in stone" and is no longer open to new ideas or perspectives. This can lead to stagnation and a lack of growth or progress.