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Webster 1913 Edition
Meson
‖
Mes′on
,Noun.
[NL., fr. Gr.
μέσον
middle, neut. of μέσος
, a., middle.] 1.
(Anat.)
The mesial plane dividing the body of an animal into similar right and left halves. The line in which it meets the dorsal surface has been called the
dorsimeson
, and the corresponding ventral edge the ventrimeson
. B. G. Wilder.
Definition 2024
meson
meson
English
Pronunciation
- IPA(key): /ˈmɛsɒn/
Noun
meson (plural mesons)
- (rare outside entomology) The mesial plane dividing the body into similar right and left halves.
Etymology 2
Pronunciation
- IPA(key): /ˈmiːzɒn/, /ˈmiːsɒn/
Noun
meson (plural mesons)
- (obsolete) A member of a group of subatomic particles having a mass intermediate between electrons and protons. (The most easily detected mesons fit this definition.)
- (now specifically, physics) 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.)
Translations
elementary particle
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