Extremely bright or dazzling, preventing someone from seeing clearly; or causing someone to lose eyesight.
From 'blind,' which comes from Old English 'blind.' The verb form developed later, and 'blinding' can mean either causing blindness or being so bright it overwhelms vision temporarily.
A 'blinding flash' of light is actually dangerous because it temporarily disables your vision—your pupils can't adjust fast enough, which is why looking at the sun is so risky.
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