noun🔗ShareKāo zi, K meson, K jiesu. Any of four unstable subatomic particles, mesons, they are a combination of a strange quark or antiquark and either an up or down quark or antiquark"Scientists studying particle collisions observed the fleeting existence of a kaon, a subatomic particle containing a strange quark. "科学家在研究粒子碰撞时,观察到了K介子(一种含有奇异夸克的亚原子粒子)短暂存在的身影。physicsscienceChat with AIVocabulary GamePractice Reading