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What does��horripilation mean?

Horripilation is a technical term for what happens when your hair stands up, such as when you’re cold, scared, or excited.We popularly call this goose bumps (or goose pimples, gooseflesh, or goose skin). Other technical names for it are piloerection and cutis anserina.Horripilation doesn’t only happen in humans. When some animals get startled or threatened, their fur raises in response. (When the fur becomes raised in this way on the neck, such as on a dog or cat, we say they’ve raised their hackles.)The same thing happens in humans, and is usually most noticeable in places where we don’t have much hair or the hair is very fine, such as the arms and neck.The verb horripilate means to trigger horripilation—to give someone goose bumps, as in Horror movies have the power to horripilate the viewer. It can also mean to experience horripilation—to get goose bumps.Example: A well-known example of horripilation in animals is the raising of a porcupine’s quills.