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ABCDEFGHIJKLMNOPQRSTUVWXYZ
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yup
Yupik
yuppie
yuppie flu
yuppify
Yurok
yurt
Yuwaalaraay
yuzu
YWCA (1)
YWCA (2)
YWHA
Z (1)
Z (2)
Z (3)
z (1)
z (2)
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Z particle
Z particle (plural Z particles)


noun 
Definition:
 
neutral elementary particle: a short-lived electrically neutral elementary particle considered to mediate the weak interaction between other elementary particles
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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