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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.

In December, European-based Cosmo Pharmaceuticals reported results from a late-stage study of a serum that blocks the hormone driving hair loss directly at the scalp, without entering the bloodstream.

From The Wall Street Journal • May 1, 2026

The ASA also said that the serum was tested in a different climate to the UK, and may not work similarly.

From BBC • Apr. 28, 2026

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

From Science Daily • Feb. 17, 2026

Pitt espouses a concept of simplicity in his men’s skincare routine — a three-step ritual starting with cleansing, serum to target signs of aging and then cream to lock in moisture.

From Los Angeles Times • Jan. 5, 2026

They put all the others under truth serum, but not me.

From "Allegiant" by Veronica Roth




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