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Definitions

penicillin

[pen-uh-sil-in] / ˌpɛn əˈsɪl ɪn /


Example Sentences

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Lifeline follows the story of Sir Alexander Fleming's discovery of penicillin at St Mary's Hospital in Paddington in 1928, weaving his historical journey with a contemporary narrative centred on a junior doctor in Edinburgh.

From BBC • Apr. 5, 2026

Alexander Fleming discovered penicillin after mould accidentally contaminated a laboratory dish and killed surrounding bacteria.

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

We learn, for example, that there’s far more to the penicillin story than the casual history of Alexander Fleming’s eureka moment.

From The Wall Street Journal • Oct. 20, 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