noun🔗Share희박화A reduction in the density of a material, especially that of a fluid."The sudden rarefaction of air near the explosion caused a sharp drop in pressure that shattered nearby windows. "폭발 근처의 공기의 갑작스러운 희박화는 근처 창문을 산산조각 낼 정도로 급격한 압력 강하를 유발했다.physicsmaterialsubstanceChat with AIVocabulary GamePractice Reading