ebullition: [eb-uh-lish-uh n]
1. A sudden outburst of passion or emotion.
2. The state of being ebullient.
3. The act or process of boiling or bubbling up.
4. A rushing forth of liquid (water, lava, and such) in an agitated state.
Origin: Latin, first known use 1525-1535
1. In meterology, a derecho is a widespread, long-lived wind storm. Derechos are associated with bands of rapidly moving thunderstorms known as bow echoes or squall lines. They can produce damage similar to that of a tornado, but the winds move in a straight-line path rather than rotating. (Courtesy of NOAA) If a swath of wind damage extends for more than 240 miles (400 kilometers) with wind gusts of at least 58 mph (93 km/h) along most of it's length, and several well-seperated gusts of at least 75 mph (121 km/h) or greater gusts, then the event may be classified as a derecho.
This image portrays a gust-front shelf cloud on the leading edge of a derecho-producing system.
Origin: Spanish meaning "straight."