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Definitions

infectious

[in-fek-shuhs] / ɪnˈfɛk ʃəs /


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.

"His energy's been infectious; he's a brilliant addition to the squad," McGinn said.

From BBC • Jun. 3, 2026

This points to methionine as a possible tool for infectious diseases and inflammatory conditions, especially in people with kidney disease, kidney failure, or those undergoing dialysis.

From Science Daily • Jun. 1, 2026

“The National Institutes of Health was previously, and for decades, the biggest funder of biomedical research against infectious diseases and other threats to public health globally,” Herder said.

From Salon • May 30, 2026

She has become more infectious the more I play her.

From Los Angeles Times • May 28, 2026

When the belted crates of art started arriving at the museum, Dr. Lange’s enthusiasm was infectious.

From "Salt to the Sea" by Ruta Sepetys




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