An alternative or archaic form of chrism, the consecrated oil used in religious rites.
Direct borrowing from Latin 'chrisma', the original form before Old French phonetic changes. This represents the Latin singular form that gave rise to the more common English 'chrism'.
Chrisma is basically the 'museum version' of chrism—you'll find it in old theological texts and medieval documents, showing how English religious vocabulary shifted its pronunciation over centuries.
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