downburst [doun-burst] Word Origin noun
- a strong downward current of air from a cumulonimbus cloud, often associated with intense thunderstorms.
Origin of downburst+ British Dictionary definitions for downburst downburst noun
- a very high-speed downward movement of turbulent air in a limited area for a short time. Near the ground it spreads out from its centre with high horizontal velocitiesAlso called: microburst
downburst in Science downburst [doun′bûrst′]
- An extremely powerful downward air current from a cumulonimbus cloud, typically associated with thunderstorm activity. Downbursts can produce effects that resemble those brought about by tornadoes.