The definition of water repellent is something that, when exposed to liquid, reacts with the liquid to cause it to move away instead of to be penetrated or soaked in.(adjective)
An example of water repellent is a spray that you can put on wood to keep it from soaking in water and beginning to rot or warp.
See water-repellent in Webster's New World College Dictionary
See water-repellent in American Heritage Dictionary 4
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