A general term for the prehistoric period intermediate between the earliest period (‘’, ‘Paleo-American’, ‘American‐paleolithic’, &c.) of human presence in the Western Hemisphere, and the most recent prehistoric period (‘Woodland’, etc.).
No longer in ordinary use, though still used occasionally to give a sense of antiquity and are still likely to be understood by well educated speakers and are found in historical texts.
From archaism or from French archaïque, ultimately from Ancient Greek ἀρχαϊκός, from ἀρχαῖος, from ἀρχή, from ἄρχω, from ἄρχω, from Proto-Indo-European *h₂ergʰ- ("to begin, rule, command").
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