Physician

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Middle English: from Old French fisicien, based on Latin physica ‘things relating to nature’ (see physic).

wiktionary

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From Middle English fisicien, from Old French fisicïen(“physician”) (modern French physicien(“physicist”)), from fisique(“art of healing”), from Latin physica(“natural science”), from Ancient Greek φυσική ἐπιστήμη(phusikḗ epistḗmē, “knowledge of nature”), from φυσικός(phusikós, “pertaining to nature”). Displaced native Middle English læche, leche, archaic Modern English leech "physician" (from Old English lǣċe(“physician, medical doctor”)).

etymonline

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physician (n.)

c. 1200, fisicien, fisitien, later phisicien, "healer, one who practices the art of healing disease and of preserving health, doctor of medicine" (as distinguished from a surgeon), from Old French fisiciien "physician, doctor, sage" (12c., Modern French physicien means "physicist"), from fisique "art of healing," from Latin physica "natural science" (see physic). The restored classical ph- spelling is attested in English from late 14c. (see ph). Related: Physiciancy; physicianly; physicianship.