Archaic or obsolete form meaning to determine, limit, or set boundaries; to settle or fix by decision.
From Latin determinare (to set limits), combining de- (off) and terminare (to bound or limit), from terminus (boundary); determ is an older English variant rarely used after the 16th century.
This archaic verb shows how English once had multiple forms of the same root—'determ,' 'determine,' 'determinate'—each nuanced differently, but modern English simplified away most variants.
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