1. (noun) preventive, preventative, prophylactic
remedy that prevents or slows the course of an illness or disease
"the doctor recommended several preventatives"
2. (noun) hindrance, hinderance, hitch, preventive, preventative, encumbrance, incumbrance, interference
any obstruction that impedes or is burdensome
3. (adj) contraceptive, preventive, preventative, contraceptive device, prophylactic device, birth control device
an agent or device intended to prevent conception
4. (adj) preventive, preventative
tending to prevent or hinder
5. (adj) preventive, preventative, prophylactic
preventing or contributing to the prevention of disease
"preventive medicine"; "vaccines are prophylactic"; "a prophylactic drug"
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Definitions of Preventative 
