氷ひょう晶しょう核かく

noun

ice nucleus; ice nucleating particle; INP

Technical term in meteorology for a particle that serves as a nucleus for ice crystal formation in clouds.

• 氷ひょう晶しょう核かくがなければ、雲くもの中なかで氷こおりの結けっ晶しょうはなかなか成せい長ちょうしない。

  Without ice nuclei, ice crystals do not readily grow in clouds.