Definition of


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

via WordNet, Princeton University

Synonyms of Meson


Alternate forms of Meson

Derivations: mesic, mesonic

Hyponyms: b-meson, j particle, k particle, k-meson, kaon, kappa-meson, pi-meson, pion, psi particle

Hypernyms: boson, hadron

Origin of the word Meson

  1. 1939, from Gk. mesos "middle" (see medial). Earlier mesotron (1938), so called for being intermediate in mass between protons and electrons. more

via Online Etymology Dictionary, ©2001 Douglas Harper

Note: If you're looking to improve your vocabulary right now, we highly recommend Ultimate Vocabulary Software.

Word of the Moment


a composite speech sound consisting of a stop and a fricative articulated at the same point (as `ch' in `chair' and `j' in `joy')