meson

English dictionary entry

Meanings

noun

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

noun

A member of a group of subatomic particles having a mass intermediate between electrons and protons. (The most easily detected mesons fit this definition.)
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.)

Pronunciation

/ˈmɛs.ɒn/ LL-Q1860 (eng)-Vealhurl-meson.wav /ˈmiːzɒn/ /ˈ-sɒn/ /ˈmɛ-/ LL-Q1860 (eng)-Vealhurl-meson2.wav LL-Q1860 (eng)-Vealhurl-meson3.wav

Word forms

meson mesons

Etymology

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

Synonyms

mesotron

Derived words

ventrimeson dorsimeson antimeson B meson dimeson eta meson exotic meson hybrid meson hypermeson intermeson J/psi meson J/ψ meson K-meson mesic mesonic mesonics mesonium multimeson mu-meson photomeson pi meson pi-minus meson pi-plus meson rho meson upsilon meson

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