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Showing results for penicillin. Search instead for penicill.
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.

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 Fleming Initiative is named after Alexander Fleming, who discovered penicillin in 1928 and started the antibiotic age.

From BBC • Nov. 18, 2025

The modern world has been transformed by inventions from the electric motor to penicillin.

From The Wall Street Journal • Nov. 14, 2025

Inside the medicine cabinet, three Extra Strength Tylenol, a box of Imodium, some Midol, and an old bottle of penicillin, which I’m mildly allergic to.

From "Anthem of a Reluctant Prophet" by Joanne Proulx




Vocabulary lists containing penicillin