Origin of mesonfrom mes(otr)on
Origin of mesonmeso- -on
See Table at subatomic particle
- (rare except entomology) The mesial plane dividing the body into similar right and left halves.
From Ancient Greek Î¼ÎÏƒÎ¿Î½ (mÃ©son, “middle").
From meso- +"Ž on.