sidereal day (English, noun)
expansion: sidereal day (plural sidereal days)
Senses:
topics: astronomy
natural-sciences
glosses: One day of sidereal time; the time in which Earth rotates once around its axis, relative to the point of the vernal equinox (about 23 hours, 56 minutes, 4 seconds).
topics: astronomy
natural-sciences
glosses: The rotational period of Earth; the time in which Earth rotates around its axis 360 degrees.
Forms:
form: sidereal days
tags: plural