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Definitions

virus

[vahy-ruhs] / ˈvaɪ rəs /


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 outbreak of the virus remains relatively contained and it has not reached this area.

From BBC • Apr. 5, 2026

The virus is so contagious that any misstep could kill the patient on board and infect the crew members, who would then be vectors to spread the deadly pathogens across America.

From The Wall Street Journal • Mar. 20, 2026

Once inside a tumor cell, the virus destroys it and then produces copies of itself that move on to infect neighboring cancer cells.

From Science Daily • Mar. 20, 2026

In both cases, she said, a new virus created a large population of people living with a complex, chronic condition with far-reaching implications for their health, housing and economic security.

From Los Angeles Times • Mar. 14, 2026

The idea is that about 15,000 years ago a chance mutation let the virus “jump the species barrier,” as scientists say, and infect human beings.

From "1491" by Charles C. Mann