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Classic usage
Reading level: hard
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From French physiologie, from Latin physiologia, from Ancient Greek φυσιολογία (phusiología, “natural philosophy”), from φύσις (phúsis, “nature”) + λόγος (lógos, “word”). Equivalent to physio- + -logy.
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Classic usage
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