To make angelic or to give an angelic quality to something.
From 'angelic' or 'angelica' plus the verb-forming suffix '-ize', which comes from Greek and is used to transform adjectives and nouns into verbs.
The '-ize' suffix is incredibly productive in English—you can '-ize' almost any noun or adjective to create a verb ('organize', 'winterize', 'personalize')—and linguists love it because it shows how flexible language is.
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