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serum

noun
🔊/ˈsɪərəm/
🔊/ˈsɪrəm/
(plural sera
🔊/ˈsɪərə/
🔊/ˈsɪrə/
, serums)
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  1. [uncountable] (biology生物) the thin liquid that remains from blood when the rest has clotted血清
  2. [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
  3. [uncountable] any liquid like water in body tissue浆液（体液的水样部分）
    4. Word Originlate 17th cent.: from Latin, literally ‘whey’.