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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.

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

He added: "We had this problem last year with penicillin, it's an ongoing issue but it's worsening. We've just been informed that another anti-coagulation medication, apixaban, is now going out of stock."

From BBC • Jan. 28, 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

That hasn’t stopped the dark-haired, dark-eyed Elordi from becoming a goth lord for the modern moment, albeit one now taking his brooding characters into eras before hot showers and penicillin.

From The Wall Street Journal • Sep. 30, 2025

She broke open one of the tiny penicillin bottles she often bought when she shopped at a pharmacy, and tried giving my brothers a penicillin injection.

From "Tasting the Sky" by Ibtisam Barakat




Vocabulary lists containing penicillin