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World English Dictionary
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sidereal
si·de·re·al
[
sī dree əl
]
adjective
Definition:
relating to stars:
relating to the stars, especially measured with reference to the apparent motion of the stars
[
Mid-17th century. < Latin
sidereus
<
sidus
"star"
]
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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