The act or process of showing, revealing, or making something clearly evident.
From Latin 'evincere' with the suffix '-ment' added to create a noun form. This nominalization follows the pattern of converting verbs to abstract nouns in Middle English.
The suffix '-ment' turns actions into nouns (like 'enjoyment' or 'achievement'), and 'evincement' does the same for 'evince'—it's the abstract idea of the revelation itself rather than what's revealed.
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