Serum
来自Big Physics
late 17th century: from Latin, literally ‘whey’.
wiktionary
From Latin serum(“whey”). Cognates include French sérum, Spanish suero, Italian siere, siero, Portuguese soro. Doublet of suero.
etymonline
serum (n.)
1670s, "watery animal fluid," from Latin serum "watery fluid, whey," from PIE verbal stem *ser- "to run, flow" (source also of Greek oros "whey;" Sanskrit sarah "flowing, liquid," sarit "brook, river"). First applied 1893 to blood serum used in medical treatments.
