What does "meson" mean?

The mesial plane dividing the body into similar right and left halves.

What is a synonym for "meson"?

Common synonyms include: mesotron, alpha particle, antibaryon, antilepton, antimeson, atom.

/ˈmɛs.ɒn/ noun

noun ·Rare ·Advanced level

Noun

1
The mesial plane dividing the body into similar right and left halves. regional
2
A member of a group of subatomic particles having a mass intermediate between electrons and protons. (The most easily detected mesons fit this definition.) obsolete
3
an elementary particle responsible for the forces in the atomic nucleus; a hadron with a baryon number of 0 wordnet
4
An elementary particle that is composed of a quark and an antiquark, such as a kaon or pion. (Mesons composed of rarer quarks are much heavier.) particle, specifically

Etymology 1

From Ancient Greek μέσον (méson, “middle”). Doublet of medium.

Etymology 2

From meso- + -on. Coined by Indian physicist Homi Bhabha in 1939, as a modification of the earlier suggestion mesotron.