A rare or archaic form meaning to redeem together or jointly, combining 'co-' (together) with 'redeem' (to buy back or restore).
From prefix 'co-' (Latin for 'together') + 'redeem' (from Latin 'redimere': 're-' back + 'emere' to buy). This compound form reflects older English word-building practices.
This word barely exists in modern English, but it reveals how flexible our language used to be—people could just stick 'co-' on the front of almost any verb to mean 'doing it together,' which is why you see so many old words like this in dusty dictionaries.
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