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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.

See Examples For:

Also, according to Weiss, testosterone injections can cause “aggressive behavior and mood swings, especially during peak serum levels.”

From Slate Jul. 16, 2026

Next, it's a serum designed to make your skin glow, "Oh my god it's so glowy," she gushes.

From BBC Jun. 6, 2026

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

His eyes drift to my jacket pocket, where the memory serum is.

From "Allegiant" by Veronica Roth

BlackCore described itself as an "elite influence, cyber, and technology company built for the modern sera of information warfare".

From BBC Jun. 12, 2026

The "Manana sera bonito" singer is the first Latina artist to headline the festival, which draws massive crowds over two consecutive weekends in Indio, California.

From Barron's Apr. 12, 2026

“It’s kind of my take on ‘it is what it is,’ ‘lo que sera sera’ kind of thing,” Apollo told ABC News of the album’s title.

From Los Angeles Times Jun. 6, 2024

Giffords’ response was “Sera, sera,” referencing the song “Que sera, sera” or “What will be, will be.”

From Seattle Times Jun. 23, 2022

“Oh, qu’elle y sera mal—peu comfortable! And her clothes, they will wear out: how can she get new ones?”

From "Jane Eyre" by Charlotte Brontë

Young shoppers enamored with the “glass skin” look are snapping up serums, peels, gels and mists.

From The Wall Street Journal May 28, 2026

Afghanistan already produces a variety of serums including antibiotics, according to manufacturer Milli Shifa Pharmaceutical.

From Barron's Feb. 16, 2026

People invest significant time and effort into keeping their skin looking young through masks, creams and serums.

From Science Daily Nov. 29, 2025

South Korean serums are better-suited for her skin compared to some Western brands that tend to be more harsh, the 27-year-old graphic designer says.

From BBC Aug. 2, 2025

“I’ve worked on serums too, as an Erudite.”

From "Allegiant" by Veronica Roth




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