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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

In the past few years, he’s seen a notable change in 20-somethings coming into his office, both with cancer as well as for prophylactic surgeries, including Benson’s.

From The Wall Street Journal • Jun. 7, 2026

Volunteers were divided into two groups: prophylactic arm and therapeutic arm.

From Science Daily • Feb. 19, 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

It is on account of this very insidiousness of onset that I have elsewhere urged as a prophylactic measure the examination every six months of all persons over forty years of age.

From Arteriosclerosis and Hypertension: with Chapters on Blood Pressure, 3rd Edition. by Warfield, Louis Marshall




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