- 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.
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.
water-repellent definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
that repels water but is not thoroughly waterproof
water-repellent definition by American Heritage Dictionary
Resistant to penetration by water but not entirely waterproof.