preventative
pre·ven·ta·tive
adjective
1.
2.
preventing or contributing to the prevention of disease
- “preventive medicine”
- “vaccines are prophylactic”
- “a prophylactic drug”
noun
1.
2.
any obstruction that impedes or is burdensome
Origin
From prevent + -ative.
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See also
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.