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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Late Latin diptycha, plural, from Ancient Greek, neuter plural of δίπτυχος (díptukhos, “folded, doubled”), from δι- (di-) + πτυχή (ptukhḗ, “fold, layer”).
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tap / space
Classic usage
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