prophylactic

US /ˌproʊ.fɪˈlæk.tɪk/
UK /ˌproʊ.fɪˈlæk.tɪk/
"prophylactic" picture
1.

intended to prevent disease

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The doctor prescribed a prophylactic antibiotic to prevent infection.
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Wearing a mask can be a prophylactic measure against airborne diseases.
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preventiveprecautionaryprotectivedefensivesafeguarding
1.

a medicine or treatment designed to prevent disease

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He takes a daily prophylactic against malaria.
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The vaccine acts as a powerful prophylactic.
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preventiveprecautionsafeguardimmunization
2.

a condom

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Always use a prophylactic to prevent sexually transmitted infections.
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He carried a prophylactic in his wallet.
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condomrubbersafe