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Definitions

serum

[seer-uhm] / ˈsɪər əm /


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Detecting such a strong signal from just 1 milliliter of serum was unexpected.

From Science Daily • Feb. 17, 2026

The rapid spread of that sticky serum tells you just how wildly successful K-beauty has become.

From BBC • Jan. 2, 2026

After years of being mistakenly linked to high serum cholesterol, eggs were rolled out to the public as a “healthy” food by the FDA External link in December 2024 External link.

From Barron's • Dec. 11, 2025

As the YouTube hit demonstrates, hot sauce isn’t just for daredevils and masochists: It’s a truth serum.

From The Wall Street Journal • Nov. 20, 2025

Just a slip of the memory serum in their morning coffee or their evening water, and they would be new people, clean slates, unblemished by history.

From "Allegiant" by Veronica Roth