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infectiousness

American  
[in-fek-shuhs-nis] / ɪnˈfɛk ʃəs nɪs /

noun

  1. the state or quality of being infectious.


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.

See Examples For:

The results showed that native and introduced birds often had similar levels of infectiousness, meaning both groups contribute to spreading the parasite.

From Science Daily Feb. 11, 2026

While the at-home tests aren’t always great at catching infections early on, they are our best available tool to measure infectiousness.

From Seattle Times Aug. 31, 2023

The team flushed toilets containing only clean water, and did not investigate the infectiousness of any particles that might be in the plume.

From Los Angeles Times Dec. 23, 2022

By the beginning of 2022 Omicron had become the dominant strain in the U.S., its seeming boundless infectiousness surpassing that of all previous variants.

From Scientific American Dec. 14, 2022

The factors which interfere to prevent such wholesale disaster are the same which govern infectiousness throughout the disease.

From The Third Great Plague A Discussion of Syphilis for Everyday People by Stokes, John H. (John Hinchman)

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