Definitions of serum:
  • noun:   watery fluid of the blood that resembles plasma but contains fibrinogen
  • name:  A surname (very rare: popularity rank in the U.S.: #67994)

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Search for serum at other dictionaries: OneLook, Oxford, American Heritage, Merriam-Webster, Wikipedia

See serum used in context: 11 rhymes, several books and articles.

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