verb

• (transitive, intransitive) To transform (or cause to transform) from a softer animal substance into bone; particularly the processes of growth in humans and animals.
• (transitive, intransitive, animate) To become (or cause to become) inflexible and rigid in habits or opinions.
• (transitive, intransitive, inanimate) To grow (or cause to grow) formulaic and permanent.
• (rare) To calcify.