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Showing results for penicillin. Search instead for penicilliu.
Definitions

penicillin

[pen-uh-sil-in] / ˌpɛn əˈsɪl ɪn /


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.

Testing revealed the most common species was penicillium chrysogenum, famous because it is used to produce the penicillin antibiotic but it can cause allergic reactions or infections in people with compromised immune systems.

From BBC • Mar. 19, 2026

The discovery began with an unexpected laboratory result, similar to many famous scientific breakthroughs including X-rays, penicillin, Viagra and modern weight loss medications.

From Science Daily • Mar. 14, 2026

Common problems that could have been treated with an office visit and a few penicillin pills will blossom into heart-valve infections and organ failure.

From MarketWatch • Jan. 26, 2026

The U.K. has long been a powerhouse in drug discovery, from the 1928 penicillin breakthrough to the landmark Oxford-AstraZeneca Covid-19 vaccine in 2020.

From The Wall Street Journal • Dec. 1, 2025

“All right, so, B. cepacia is a hardy bacterium. It’s so adaptive that it actually feeds on penicillin instead of being attacked by it. So our first line of defense is...”

From "Five Feet Apart" by Rachael Lippincott




Vocabulary lists containing penicillin