frontogenesis

/ˌfrʌntoʊˈdʒɛnəsɪs/
noun
  1. The formation or strengthening of a weather front, where two different air masses meet.
    • Frontogenesis often occurs when cold and warm air masses collide.
    • The rapid frontogenesis led to a sudden drop in temperature across the region.
    • Meteorologists studied the frontogenesis that created the severe thunderstorm.