prophylactic - Dictionary definition and meaning for word prophylactic
pro+phy+lactic -> professionals use lactic acid(in milk) to prevent diseases.
professionals recommend lactation(lactic) for small babies to prevent diseases
PRO+PHY+LACTIC = PROfessional PHYsician prescribing LACTIC acid to prevent diseases
PROfessional porn actors always use CONDOM when getting PHYsical..its to prevent from disease to spread.