To galvanize is to shock or excite someone into taking sudden action. It can also mean to coat metal, especially iron or steel, with a layer of zinc to protect it from rust.
“Galvanize” comes from the name of Italian scientist Luigi Galvani, who studied electricity in animal muscles in the 18th century. His work led to the verb meaning to stimulate with electricity and then metaphorically to spur into action.
When a shocking news story “galvanizes” people, the word secretly compares their reaction to a jolt of electricity. Galvanized steel, used in fences and roofs, literally carries his name every time it stands up to the rain.
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