Meanings
nounstellar day (plural stellar days)
plural stellar days
- astronomyThe rotational period of Earth; the time in which Earth rotates exactly 360 degrees around its axis, measured relative to the stars.
Synonyms: sidereal day
Synonyms & antonyms
nounThe rotational period of Earth; the time in which Earth rotates exactly 360 degrees around its axis, measured relative to the stars.
Similar
Translations
Dutch sterrendag
- sterrendagperiod of one rotation of Earth, measured relative to the stars
Finnish tähtivuorokausi
- tähtivuorokausiperiod of one rotation of Earth, measured relative to the stars
Cite this entry
APA
stellar day. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/stellar%20day
MLA
“stellar day.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/stellar%20day. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “stellar day,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/stellar%20day.
Source: stellar day on Wiktionary, CC BY-SA 4.0.