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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.

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Of the successful claims, two of the men were cleared by DNA evidence, while blood serum evidence was used to prove innocence in the third.

From Salon Aug. 10, 2026

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

Another 2025 study using Mendelian randomization found no clear evidence that genetically higher total serum B12 levels protect the general population from psychiatric disorders or cognitive impairment.

From Science Daily May 22, 2026

The genetic anomaly that makes me aware during simulations also suggests I could be resistant to serums, so my truth serum testimony might not be reliable.

From "Allegiant" by Veronica Roth

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

"Que sera sera, whatever will be will be, we're going to Wembley," was how the Rovers fans serenaded their players at the end, with the team taking the acclaim.

From BBC Feb. 28, 2023

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

The company sells beauty and wellness products such as facial serums, oils, masks and makeup.

From The Wall Street Journal Aug. 6, 2026

Soon I was using prescription shampoo, two topical serums, monthly steroid scalp injections, and a pricey red-light therapy cap that made me look like an alien.

From Slate May 23, 2026

The investigation centres on "possible unfair commercial practices" linked to the premature use of adult cosmestics, including "encouraging the compulsive purchase of face masks, serums and anti-aging creams" to children under the age of 10.

From BBC Mar. 29, 2026

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

From Barron's Feb. 16, 2026

I relax, and I no longer feel like some kind of Divergent soldier, defying serums and government leaders alike.

From "Allegiant" by Veronica Roth




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