protectant

protectant

[pruh-tek-tuhnt]
noun
a substance, as a chemical spray, that provides protection, as against insects, frost, rust, etc.; protective agent.

Origin:
1660–70, for an earlier sense; protect + -ant

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World English Dictionary
protectant (prəˈtɛktənt)
 
n
a chemical substance that affords protection, as against frost, rust, insects, etc

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