Phrase guide

autumnal equinox

noun · 3 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

The moment when the sun appears to cross the celestial equator while tilting away from the observer, taking place in September in the northern hemisphere and March in the southern hemisphere.

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

(astronomy) the equinoctial point that lies in the constellation of Virgo

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: equinoctial point, equinox

3

noun

Meaning 3

September 22

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: September equinox, fall equinox

Antonyms: vernal equinox

Broader terms: equinox

History

Etymology

No etymology was provided for this word.

Across languages

Translations

51 source translations are retained for this English entry.

  • Belarusian: восеньскае раўнадзенства (vósjenʹskaje rawnadzjenstva) — moment
  • Catalan: equinocci de tardor — moment
  • Chinese Mandarin: 秋分 (qiūfēn) — moment
  • Czech: podzimní rovnodennost — moment
  • Danish: efterårsjævndøgn — moment
  • Esperanto: aŭtuna ekvinokso — moment
  • Estonian: sügisene pööripäev — moment
  • Estonian: sügisene võrdpäevsus — moment
  • Faroese: heystjavndøgur — moment
  • Finnish: syyspäiväntasaus — moment
  • French: équinoxe d'automne — moment
  • Georgian: შემოდგომის ბუნიობა (šemodgomis bunioba) — moment
  • Georgian: შემოდგომის დღეღამტოლობა (šemodgomis dɣeɣamṭoloba) — moment
  • German: Herbsttagundnachtgleiche — moment
  • Greek: φθινοπωρινή ισημερία (fthinoporiní isimería) — moment
  • Hindi: शरद विषुव (śarad viṣuv) — moment
  • Icelandic: haustjafndægur — moment
  • Irish: cónocht an fhómhair — moment
  • Japanese: 秋分 (shūbun) — moment
  • Navajo: aakʼeego shá ałnííʼ hanádááh — moment
  • Norwegian Bokmål: høstjevndøgn — moment
  • Norwegian Nynorsk: haustjamndøger — moment
  • Norwegian Nynorsk: haustjamndøgn — moment
  • Persian: اعتدال پاییزی (e'tedâl-e pâyizi) — moment
  • Polish: równonoc jesienna — moment
  • Portuguese: equinócio de outono — moment
  • Romanian: echinocțiu de toamnă — moment
  • Russian: осе́ннее равноде́нствие (osénneje ravnodénstvije) — moment
  • Scottish Gaelic: co-fhad-thràth an fhoghair — moment
  • Slovak: jesenná rovnodennosť — moment
  • Spanish: equinoccio otoñal — moment
  • Swedish: höstdagjämning — moment
  • Thai: ศารทวิษุวัต (sarathawisuwat) — moment
  • Turkish: sonbahar ekinoksu — moment
  • Ukrainian: осі́ннє рівноде́ння (osínnje rivnodénnja) — moment
  • Catalan: equinocci de tardor — point
  • Chinese Mandarin: 秋分點 /秋分点 (qiūfēndiǎn) — point
  • Georgian: შემოდგომის ბუნიობა (šemodgomis bunioba) — point
  • Georgian: შემოდგომის დღეღამტოლობა (šemodgomis dɣeɣamṭoloba) — point
  • Icelandic: haustpunktur — point
  • Irish: cónocht an fhómhair — point
  • Irish: Túsphointe Libra — point
  • Italian: equinozio d'autunno — point
  • Japanese: 秋分点 (shūbunten) — point
  • Polish: równonoc jesienna — point
  • Portuguese: equinócio de outono — point
  • Romanian: punct autumnal — point
  • Russian: осе́ннее равноде́нствие (osénneje ravnodénstvije) — point
  • Spanish: equinoccio otoñal — point
  • Thai: ศารทวิษุวัต (sarathawisuwat) — point
  • Turkish: sonbahar noktası — point