Of ideas or attitudes, inflexible, old-fashioned.(adjective)
Simple past tense and past participle of ossify.(verb)
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Use "ossified" in a sentence
"Analogous to the bony tissues are the so-called ossified (really, calcified) arteries."
"Introducing the annual report today, Thompson said that setting "appropriate limits" for the BBC's online operation would not mean that services "ossified"."
"“The existing seem has been kind of ossified,” he said."