serum

noun

/ˈsɪərəm/

/ˈsɪrəm/

(plural sera

/ˈsɪərə/

/ˈsɪrə/

, serums)

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[uncountable] (biology生物) the thin liquid that remains from blood when the rest has clotted血清
[uncountable, countable] (medical医学) serum taken from the blood of an animal and given to people to protect them from disease, poison, etc.免疫血清
- snakebite serum抗蛇毒血清
[uncountable] any liquid like water in body tissue浆液（体液的水样部分）

Word Originlate 17th cent.: from Latin, literally ‘whey’.