Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
Munster (1)
Munster (2)
Münster
Munter hitch
muntin
muntjac
Muntz metal
munyeroo
muon
muon neutrino
mural
muramic acid
Murchison
Murcia
murder
murder board
murderous
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

muon
mu·on [ my òn ] (plural mu·ons)


noun 
Definition:
 
elementary particle: an elementary particle with a mass about 200 times that of an electron. It is a lepton with a negative charge and a half-life of two-millionths of a second.
[Mid-20th century. Contraction of mu meson]

mu·on·ic [ myoo ónnik ] adjective
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft