serum

1. 1.

   an amber, watery fluid, rich in proteins, that separates out when blood coagulates

   Synonymsblood serum

   Broaderliquid body substance

   Narrowerantiserumwhey

Other forms of serum

plural

sera

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about serum

What does serum mean?

serum means "an amber, watery fluid, rich in proteins, that separates out when blood coagulates".

How many syllables are in serum?

serum has 2 syllables: ser-um. The stress falls on "ser". In IPA it is /ˈsɪɹəm/.

What is another word for serum?

Close synonyms include blood serum. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is serum a common word?

serum is banded "Familiar" — widely understood, used when the subject calls for it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.