rain-area

Century Dictionary and Cyclopedia

1. n. The region over which rain has fallen, shown on a daily weather-map.
2. n. Any area over which rain is falling at any time.
3. n. That quadrant of an extended cyclonic storm in which the most rain usually falls. It is the southeast quadrant in the storms of the United States, but the southwest quadrant in Europe, and a northerly quadrant in the storms of the southern hemisphere.
4. n. That portion of the storm-area over which rain is falling, as distinguished from the portion over which snow is falling.