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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.

But the energy of the production is infectious.

From Los Angeles Times • May 30, 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

His smile and touching empathy were infectious, as was his impactful capacity to reach out, build relationships, help and support those around him.

From BBC • May 29, 2026

"When an animal has become sick from an infection their immune system is compromised which increases the risk of further disease exacerbation from other infectious agents that may have once been subclinical," Mishin explained.

From Science Daily • May 26, 2026

The spread of infectious diseases was inevitable, as were bitter arguments among old neighbors who fought over ownership of the land that was left.

From "Mountains Beyond Mountains" by Tracy Kidder and Michael French




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