noun🔗Share파이온Any of three semistable mesons, having positive, negative or neutral charge, composed of up and down quarks/antiquarks."Inside the particle accelerator, scientists observed the fleeting existence of a positively charged pion before it decayed. "입자 가속기 내부에서 과학자들은 양전하를 띤 파이온이 붕괴되기 전에 찰나의 존재를 관찰했다.physicselementChat with AIVocabulary GamePractice Reading
