blood serum

noun

The portion of whole blood that is not blood cells and not clotting factors; it can be separated as a clear yellowish liquid after the blood has been allowed to clot.

“Holonyms: plasma, blood plasma < blood”

Similar
serum
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Meanings

nounblood serum (countable and uncountable, plural blood serums or blood sera)

plural blood serums · plural blood sera · alternative dated bloodserum

  1. countableuncountablebiologyThe portion of whole blood that is not blood cells and not clotting factors; it can be separated as a clear yellowish liquid after the blood has been allowed to clot.

    Holonyms: plasma, blood plasma < blood

    Synonyms: serum

Synonyms & antonyms

nounThe portion of whole blood that is not blood cells and not clotting factors; it can be separated as a clear yellowish liquid after the blood has been allowed to clot.

Similar
serum

More synonyms by meaning

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

Similar
serum
Broader
liquid body substancebodily fluidbody fluid
Also see
serum

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

blood serum. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/blood%20serum

MLA

“blood serum.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/blood%20serum. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “blood serum,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/blood%20serum.

Source: blood serum on Wiktionary, CC BY-SA 4.0.