Phrase guide

event horizon

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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • General-American: /əˈvɛnt həˈɹaɪ.zən/
  • General-American: /-zɪn/
  • General-American: [əˈvɛɾ̃ həˈɹaɪ.zən]
  • General-American: [əˈvɛn -]
  • General-American: [-zɪn]
  • US: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

The gravitational sphere of a black hole within which the escape velocity is greater than the speed of light.

Definition source: English Wiktionary via Wiktextract

Topics: astrophysics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

The furthest distance in the past of the universe from which light signals from an event can reach an observer at later times.

Definition source: English Wiktionary via Wiktextract

Topics: astrophysics

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A point of no return.

Definition source: English Wiktionary via Wiktextract

Usage: broadly, figuratively

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

75 source translations are retained for this English entry.

  • Afrikaans: waarnemingshorison — gravitational sphere within which light cannot escape
  • Albanian: horizont i ngjarjes — gravitational sphere within which light cannot escape
  • Albanian: horizont i ngjarjeve — gravitational sphere within which light cannot escape
  • Arabic: أُفُق اَلْحَدَث (ʔufuq al-ḥadaṯ) — gravitational sphere within which light cannot escape
  • Armenian: իրադարձությունների հորիզոն (iradarjutʻyunneri horizon) — gravitational sphere within which light cannot escape
  • Asturian: horizonte de sucesos — gravitational sphere within which light cannot escape
  • Azerbaijani: hadisə üfüqü — gravitational sphere within which light cannot escape
  • Basque: gertaeren muga — gravitational sphere within which light cannot escape
  • Belarusian: гарызонт падзей (haryzónt padzjej) — gravitational sphere within which light cannot escape
  • Bengali: ঘটনা দিগন্ত (ghoṭona digonto) — gravitational sphere within which light cannot escape
  • Bulgarian: хоризонт на събитията (horizont na sǎbitijata) — gravitational sphere within which light cannot escape
  • Burmese: ဖြစ်ရပ် မိုးကုတ်စက်ဝိုင်း (hpracrap mui:kutcak-wuing:) — gravitational sphere within which light cannot escape
  • Catalan: horitzó d'esdeveniments — gravitational sphere within which light cannot escape
  • Chinese Cantonese: 事界 (si6 gaai3) — gravitational sphere within which light cannot escape
  • Chinese Mandarin: 事件視界 /事件视界 (shìjiàn shìjiè) — gravitational sphere within which light cannot escape
  • Chinese Mandarin: 事件穹界 (shìjiàn qióngjiè) — gravitational sphere within which light cannot escape
  • Chinese Mandarin: 事界 (shìjiè) — gravitational sphere within which light cannot escape
  • Czech: horizont událostí — gravitational sphere within which light cannot escape
  • Danish: begivenhedshorisont — gravitational sphere within which light cannot escape
  • Dutch: waarnemingshorizon — gravitational sphere within which light cannot escape
  • Esperanto: eventa horizonto — gravitational sphere within which light cannot escape
  • Estonian: sündmuste horisont — gravitational sphere within which light cannot escape
  • Faroese: hendingartrom — gravitational sphere within which light cannot escape
  • Finnish: tapahtumahorisontti — gravitational sphere within which light cannot escape
  • French: horizon des événements — gravitational sphere within which light cannot escape
  • Georgian: მოვლენათა ჰორიზონტი (movlenata horizonṭi) — gravitational sphere within which light cannot escape
  • German: Ereignishorizont — gravitational sphere within which light cannot escape
  • Greek: ορίζοντας γεγονότων (orízontas gegonóton) — gravitational sphere within which light cannot escape
  • Hebrew: אופק אירועים — gravitational sphere within which light cannot escape
  • Hindi: घटना क्षितिज (ghaṭnā kṣitij) — gravitational sphere within which light cannot escape
  • Hungarian: eseményhorizont — gravitational sphere within which light cannot escape
  • Icelandic: sjónhvörf — gravitational sphere within which light cannot escape
  • Icelandic: skynmörk — gravitational sphere within which light cannot escape
  • Indonesian: horizon peristiwa — gravitational sphere within which light cannot escape
  • Interlingua: horizonte de eventos — gravitational sphere within which light cannot escape
  • Irish: léaslíne theagmhais — gravitational sphere within which light cannot escape
  • Italian: orizzonte degli eventi — gravitational sphere within which light cannot escape
  • Japanese: 事象の地平面 (jishō no chiheimen) — gravitational sphere within which light cannot escape
  • Kazakh: оқиға көкжиегі (oqiğa kökjiegı) — gravitational sphere within which light cannot escape
  • Korean: 사상(事象)의 지평선 (sasang-ui jipyeongseon) — gravitational sphere within which light cannot escape
  • Central Kurdish: ئاسۆی ڕووداو (asoy rûdaw) — gravitational sphere within which light cannot escape
  • Latin: horizon eventuum — gravitational sphere within which light cannot escape
  • Latvian: notikumu horizonts — gravitational sphere within which light cannot escape
  • Lithuanian: įvykių horizontas — gravitational sphere within which light cannot escape
  • Macedonian: хоризонт на настани (horizont na nastani) — gravitational sphere within which light cannot escape
  • Malayalam: സംഭവചക്രവാളം (sambhavacakravāḷaṁ) — gravitational sphere within which light cannot escape
  • Maltese: orizzont avveniment — gravitational sphere within which light cannot escape
  • Norwegian Bokmål: hendelseshorisont — gravitational sphere within which light cannot escape
  • Norwegian Nynorsk: hendingshorisont — gravitational sphere within which light cannot escape
  • Norwegian Nynorsk: hendingsrand — gravitational sphere within which light cannot escape
  • Norwegian Nynorsk: hendelseshorisont — gravitational sphere within which light cannot escape
  • Persian: افق رویداد (ofoq-e ruydâd) — gravitational sphere within which light cannot escape
  • Polish: horyzont zdarzeń — gravitational sphere within which light cannot escape
  • Portuguese: horizonte de eventos — gravitational sphere within which light cannot escape
  • Punjabi: ਇਵੈਂਟ ਹੌਰਿਜ਼ਨ (ivaiṇṭ haurizan) — gravitational sphere within which light cannot escape
  • Romanian: orizontul evenimentelor — gravitational sphere within which light cannot escape
  • Romanian: orizont de evenimente — gravitational sphere within which light cannot escape
  • Russian: горизо́нт собы́тий (gorizónt sobýtij) — gravitational sphere within which light cannot escape
  • Russian: сфе́ра Шва́рцшильда (sféra Švárcšilʹda) — gravitational sphere within which light cannot escape
  • Serbo-Croatian: хоризонт догађаја — gravitational sphere within which light cannot escape
  • Serbo-Croatian: horizont događaja — gravitational sphere within which light cannot escape
  • Slovak: horizont udalostí — gravitational sphere within which light cannot escape
  • Slovene: horizont dogodkov — gravitational sphere within which light cannot escape
  • Slovene: dogódkovno obzórje — gravitational sphere within which light cannot escape
  • Spanish: horizonte de sucesos — gravitational sphere within which light cannot escape
  • Spanish: horizonte de eventos — gravitational sphere within which light cannot escape
  • Swedish: händelsehorisont — gravitational sphere within which light cannot escape
  • Tamil: நிகழ்வெல்லை (nikaḻvellai) — gravitational sphere within which light cannot escape
  • Thai: ขอบฟ้าเหตุการณ์ (kòp-fáa-hàyt-gaan) — gravitational sphere within which light cannot escape
  • Turkish: olay ufku — gravitational sphere within which light cannot escape
  • Ukrainian: горизонт подій (horyzont podij) — gravitational sphere within which light cannot escape
  • Urdu: افق وقیعہ — gravitational sphere within which light cannot escape
  • Uzbek: voqealar gorizonti — gravitational sphere within which light cannot escape
  • Vietnamese: chân trời sự kiện — gravitational sphere within which light cannot escape
  • Welsh: gorwel digwyddiad — gravitational sphere within which light cannot escape