MESON

meson, mesotron

(noun) an elementary particle responsible for the forces in the atomic nucleus; a hadron with a baryon number of 0

Source: WordNet® 3.1

Etymology 1

Noun

meson (plural mesons)

(rare, outside, entomology) The mesial plane dividing the body into similar right and left halves.

Etymology 2

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, particle) 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.)

Synonyms

• mesotron

Anagrams

• 'mones, Mones, Semon, mones, nomes, omens, semon, somen

Source: Wiktionary

Mes"on, n. Etym: [NL., fr. Gr. (Anat.)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition