penicillin

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.

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

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

In one way, it’s funny to hear C-suite executives describing this fried appetizer iteration in the kinds of awestruck tones usually reserved for, like, the discovery of penicillin.

From Slate • Aug. 11, 2025

The great contemporary achievement of modern medicine is the technology for controlling and preventing bacterial infection, but this did not fall into our laps with the appearance of penicillin and the sulfonamides.

From "The Lives of a Cell" by Lewis Thomas