sidereal day


Definition of SIDEREAL DAY

:  the interval between two successive transits of a point on the celestial sphere (as the vernal equinox) over the upper meridian of a place :  23 hours, 56 minutes, 4.1 seconds of mean time

First Known Use of SIDEREAL DAY



Next Word in the Dictionary: sidereal hourPrevious Word in the Dictionary: sidereal clockAll Words Near: sidereal day
July 03, 2015
interpellate Hear it
to formally question a public official
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears