from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of a family of subatomic particles that participate in strong interactions, are composed of a quark and an antiquark, and have masses generally intermediate between leptons and baryons. See Table at subatomic particle.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The mesial plane dividing the body into similar right and left halves.
- n. A member of a group of subatomic particles having a mass intermediate between electrons and protons. (The most easily detected mesons fit this definition.)
- n. An elementary particle that is composed of a quark and an antiquark, such as a kaon or pion. (Meson composed of rarer quarks are much heavier.)
from the GNU version of the Collaborative International Dictionary of English
- n. 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.
- n. An elementary particle made up of two quarks; a hadron having a baryon number of zero; any hadron other than a baryon. Mesons are bosons with integral values of spin, having a mass intermediate between those of the electron and a nucleon; they may have positive or negative charges, or may be neutral. Mesons are of three types: the pion (π-meson), kaon (K-mesons), and η-mesons.
from The Century Dictionary and Cyclopedia
- n. The median plane which divides a body into two equal and symmetrical parts; the vertical longitudinal middle plane, dividing the body into right and left halves.
- n. See tetrachord.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an elementary particle responsible for the forces in the atomic nucleus; a hadron with a baryon number of 0
A new period in meson research began about three years ago.
The latter meson is identical with the one whose existence in cosmic rays had been previously established by American researchers.
The mass of the (p) - meson is said to be 286 times greater than the mass of the electron, and that of the µ-meson 216 times greater.
He called meson, like a van Gogh in the arms of the hangman.
Heisenberg remarked, when the Japanese physicist Yukawa discovered the particle now known as the meson and the term
Its lifetime has been found to be 100 million times shorter than the lifetime of the µ-meson, which is one-millionth of a second.
The quarks always be found couples on particle groups called meson (consist of quark and antiquark) and baryon (consist from three quarks).
When longer jumps were attempted, the tachyon waves lost their cohesion, and there was significant distortion of the meson matter when it returned to normal space-time.
Claudio tells us that the building where Piave (Italian for "river") is located dates back to 1730 and was once a meson or mansion owned by the Floris family.
B-factory accelerator constructed inside the TRISTAN tunnel and operated with an aim to proving CP violation in a B-meson system.