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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.

Schiffman, 29, knew her mom had a prophylactic double mastectomy in 2015 after discovering she had the BRCA1 gene mutation.

From The Wall Street Journal • Jun. 7, 2026

Along with routine screening through mammography or MRI, some individuals with inherited genetic mutations that greatly increase breast cancer risk may choose preventive surgery, including prophylactic mastectomy.

From Science Daily • Jun. 6, 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

But more crucially, American military aid is prophylactic.

From Salon • Aug. 13, 2025

There are, in addition, however, certain prophylactic measures which will prove valuable in the hands of every good physician.

From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various




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