Phrase guide

solar day

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

One day of solar time; the time in which a planet such as Earth apparently rotates once around its axis relative to the Sun; the time taken for the Sun to seem to be in the same place in the sky twice (on Earth about 24 hours as an average - the length of solar day is not constant throughout the year)

Definition source: English Wiktionary via Wiktextract

Topics: astronomy, natural-sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

time for Earth to make a complete rotation on its axis

Definition source: Princeton WordNet 3.0

Examples

  • two days later they left
  • they put on two performances every day
  • there are 30,000 passengers per day

Meaning relationships

Synonyms: day, twenty-four hours, twenty-four hour period, 24-hour interval, mean solar day

Antonyms: none provided

Broader terms: time unit, unit of time

Narrower terms: tomorrow, today, yesterday, morrow, eve, date, day of the month

History

Etymology

No etymology was provided for this word.

Across languages

Translations

12 source translations are retained for this English entry.

  • Bengali: আফতাবী রোজ (aftabī roz) — time for a planet to rotate once relative to the sun
  • Chinese Mandarin: 太陽日 /太阳日 (tàiyángrì) — time for a planet to rotate once relative to the sun
  • Dutch: zonnedag — time for a planet to rotate once relative to the sun
  • Finnish: aurinkovuorokausi — time for a planet to rotate once relative to the sun
  • French: jour solaire — time for a planet to rotate once relative to the sun
  • Galician: día solar — time for a planet to rotate once relative to the sun
  • German: Sonnentag — time for a planet to rotate once relative to the sun
  • German: Solartag — time for a planet to rotate once relative to the sun
  • Japanese: 太陽日 (taiyōjitsu) — time for a planet to rotate once relative to the sun
  • Russian: со́лнечные су́тки (sólnečnyje sútki) — time for a planet to rotate once relative to the sun
  • Spanish: día solar — time for a planet to rotate once relative to the sun
  • Swedish: soldygn — time for a planet to rotate once relative to the sun