[f. L. caseāt-us, treated with cheese: see -ATION.] a. The coagulation of milk, conversion into cheese. b. Pathol. ‘A form of fatty degeneration of morbid products … in which the structure … is converted into a soft yellowish cheesy material’ (Syd. Soc. Lex.).
1866. A. Flint, Princ. Med. (1880), 162. Caseation of the products of lobar pneumonitis.
1876. Bristowe, The. & Pract. Med. (ed. 2), 64. A tendency to … that form of degeneration which is termed caseation.
