MSN home
Mail
My MSN
encarta
greeting cards
encarta
®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
cosmeceutical
cosmetic
cosmetic surgery
cosmetician
cosmetology
cosmic
cosmic dust
cosmic radiation
cosmic ray
cosmic string
cosmo-
cosmochemistry
cosmodrome
cosmogony
cosmography
cosmological argument
cosmological principle
Also available:
World English Dictionary
Dictionnaire Français
cosmic ray
cos·mic ray
(
plural
cos·mic rays
)
noun
Definition:
high-energy radiation from space:
a stream of high-energy radiation that reaches Earth from outer space
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
MSN Privacy
Legal
Advertise
Feedback
Help
© 2009 Microsoft