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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.

Over 12 weeks, the fish oil groups had dose related increases in serum EPA and DHA.

From Science Daily • May 31, 2026

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 final piece of evidence Beiersdorf submitted, a peer-reviewed study in to the active ingredient, did not include the serum.

From BBC • Apr. 28, 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

“We don’t have time for this. We have to make sure Zeke and his mother and Christina’s family are all inoculated before the memory serum is released, or they’ll be useless.”

From "Allegiant" by Veronica Roth




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