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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.

To confirm their clinical relevance, we studied serum samples from 192 breast cancer patients enrolled in the I-SPY 2 neoadjuvant chemotherapy trial.

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

“Don’t do it!” he shouts, and he lunges forward, toward whatever phantom the serum is showing him.

From "Allegiant" by Veronica Roth