Dosage
来自Big Physics
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late Middle English: from French, via late Latin from Greek dosis ‘gift’, from didonai ‘give’.
wiktionary
From French dosage.
etymonline
dosage (n.)
1867 in chemistry; 1874 in medicine, "act or practice of administering medication in doses," especially in reference to the size; see dose + -age, perhaps on model of French dosage (1812).
