Go to MSN Homeencarta®
Dictionary
Find
in
Dictionary
Thesaurus
Translations
ABCDEFGHIJKLMNOPQRSTUVWXYZ
Click to move up the list of words
side split
side-straddle hop
side street
side tone
side whiskers
sidearm
sideband
sidebar
sideboard
sideburns
sidecar
sidecut
sidecut radius
sidefoot
sidekick
sidelevers
sidelight
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

sidereal day
si·de·re·al day (plural si·de·re·al days)


noun 
Definition:
 
day calculated by using star's position: the time it takes for Earth to make one complete revolution in relation to a specific star, equal to 23 hours, 56 minutes, 4.1 seconds
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
Advertisement
© 2009 Microsoft