Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
unwire
unwisdom
unwise
unwish
unwitting
unwonted
unworkable
unworldly
unworn
unworthy
unwound
unwrap
unwritten
unyielding
unyoke
unzip
UP
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

up quark
up quark (plural up quarks)


noun 
Definition:
 
quark with electric charge of +2/3: a quark with an electric charge of +2/3 and zero strangeness and charm
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft