寒かん帯たい前ぜん線せん

noun

polar front

Meteorological term for the boundary between polar and warmer air masses.

• 寒かん帯たい前ぜん線せんは、北ほっ極きょくの冷つめたい空くう気きと中ちゅう緯い度どの暖あたたかい空くう気きの境きょう界かいです。

  The polar front is the boundary between cold Arctic air and warm mid-latitude air.