axion

ax.i.on

n.（名词）
A hypothetical boson having no charge or spin and small mass, proposed to explain the existence of certain symmetries of the strong nuclear force.
轴子：无电荷、自旋以及小质量的假定玻子，用来解释强核相互作用某些对称性的存在

来源：
axi(al)
axi(al)
-on
-on