ˌ ̷ ̷ ̷ ̷ˈlaksə̇s noun
( plural prophylax·es -kˌsēz)
Etymology: New Latin, from Greek prophylaktikos prophylactic, after such pairs as Greek praktikos practical : praxis doing, action
: the prevention of disease : measures necessary to preserve health and prevent the spread of disease : protective, preservative, or preventive treatment