Past tense of reopen; to open again something that was previously closed.
From Middle English 'openen,' with the prefix 're-' (again) added to create a new meaning. 're-' comes from Latin and is used in thousands of English words to mean repetition.
The 're-' prefix is so productive in English that you can add it to almost any verb and be understood—'re-imagine,' 're-evaluate,' 're-contextualize'—making English incredibly flexible for creating new concepts.
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