n. 25B6; adjective
preventive maintenance : PRE-EMPTIVE, deterrent, precautionary, protective.
preventive medicine : PROPHYLACTIC, disease-preventing.
25B6; noun
a preventive against crime : PRECAUTIONARY MEASURE, deterrent, safeguard, security, protection, defence.
disease preventives : PROPHYLACTIC (DEVICE), prophylactic medicine, preventive drug.