To make angelic or to transform into an angel; to give something an angelic quality.
From 'angel' plus the verb-forming suffix '-ize', following the standard English pattern of turning nouns into verbs.
While 'angelicize' uses 'angelic' as the base and 'angelize' uses 'angel' directly, both verbs are rare and mostly poetic—showing that '-ize' is powerful but not every possible verb it could create actually gets used in practice.
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