| 单词 | psi-prime particle | 
| 释义 | psi-prime particle [`sī ¦prīm ´pärd·ǝ·kǝl]  PARTICLE PHYSICS A neutral meson which has a mass of 3684 megaelectronvolts, spin quantum number 1, and negative parity and charge parity; it has an anomalously long lifetime. Symbolized ψʹ.  | 
	
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