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Definitions

prophylactic

[proh-fuh-lak-tik, prof-uh-] / ˌproʊ fəˈlæk tɪk, ˌprɒf ə- /
ADJECTIVE
protective
Synonyms


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.

Pet owners across the country have been advised they should treat their cats and dogs as a preventative measure every month, known as prophylactic use - although many veterinary organisations have now updated their advice.

From BBC • Jun. 10, 2026

She said she has seen a 30% increase in women ages 30 to 35 coming in for reconstruction after prophylactic mastectomies in the past three years.

From The Wall Street Journal • Jun. 7, 2026

It also announced plans to buy Cidara Therapeutics, which is working on antiviral treatments, including a flu prophylactic in Phase 3, for $9.2 billion.

From MarketWatch • Feb. 3, 2026

What they found was that it didn't matter whether the patient was treated with prophylactic antibiotics or not when it came to rates of post-operative infection.

From Science Daily • Jun. 5, 2024

Who can tell whether our New England climate, with all its consumptive provocations, might not be found absolutely unendurable but for the amelioration furnished by this generously diffused terebinthine prophylactic?

From A Rambler's lease by Torrey, Bradford




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