1. to restore or be restored to health. 2. (Medicine) (intr; often foll by over or up) (of a wound, burn, etc) to repair by natural processes, as by scar formation. 3. (Medicine) (tr) a. to treat (a wound, etc) by assisting in its natural repair. b. to cure (a disease or disorder)
Flash flood is an extreme type of flood that is categorized within the fast kinds of riverine floods. The âflashâ attached to the term refers to its rapid effect. This type of flood is found to be the result of the convective moisture from the air or waters, like rain and snow that fall from the sky.
Therefore, when a river floods it does so quite slowly as it takes time for the rain to percolate through the ground and into the rivers and out to sea â allowing time for some warning. With flash flooding there is often very little time between the rain falling and flash flooding occurring.