caseation
Concise Oxford English Dictionary © 2008 Oxford University Press:
caseation /ˌkeɪsɪˈeɪʃ(ə)n/
▶noun Medicine a form of necrosis characteristic of tuberculosis, in which diseased tissue forms a firm, dry mass like cheese.
– origin C19: from med. L. caseatio(n-), from L. caseus ‘cheese’.
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