prophylaxis
noun
pro·phy·lax·is
ˌprō-fə-ˈlak-səs
also ˌprä-
plural prophylaxes
ˌprō-fə-ˈlak-ˌsēz
also ˌprä-
: measures designed to preserve health (as of an individual or of society) and prevent the spread of disease
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Merriam-Webster unabridged
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