cyclogenesis
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GC: n

S: http://www.cliffsnotes.com/sciences/earth-science/weather/fronts-and-mid-latitude-cyclogenesis (last access: 26 June 2015); http://www.emc.ncep.noaa.gov/gmb/tpm/emchurr/tcgen/ (last access: 26 June 2015).

N: 1. From cyclone and genesis. First Known Use: circa 1938.
2. Process of initiation or intensification of a cyclonic circulation.
3. cyclogenesis, in meteorology, is the process of extratropical cyclone development and intensification. Cyclogenesis is initiated by a disturbance occurring along a stationary or very slow-moving front between cold and warm air. This disturbance distorts the front into the wavelike configuration. As the atmospheric pressure within the disturbance continues to decrease, it assumes the appearance of a cyclone and forces poleward and equatorward movements of warm and cold air, respectively.

S: 1. MW – http://www.merriam-webster.com/dictionary/cyclogenesis (last access: 26 June 2015). 2. METEOTERM/IMV – http://wmo.multicorpora.net/MultiTransWeb/Web.mvc (last access: 26 June 2015). 3. EncBrit – http://global.britannica.com/science/cyclogenesis (last access: 26 June 2015).

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CR: cyclone, explosive cyclogenesis, jet stream, hurricane, low-pressure area, natural disaster, storm, thunderstorm.