event horizon
/əˈvɛnt həˈɹaɪ.zən/
"event-horizon" is a 12-letter English headword indexed on PlainSpell.
The verdict
“event horizon” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 13
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - The gravitational sphere of a black hole within which the escape velocity is greater than the speed of light.
Corpus desk
Index EN-event-horizon · event horizon · English
event horizon · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-MEGA 13 letters
- VOW-5 5 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-THIN "E" thin
- PHOTO-UNK Peer pending
Read with this headword: Spelling guide for this pattern
Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.
| Property | Value |
|---|---|
| Headword | event horizon |
| Language | English |
| Part of speech | Noun |
| IPA | /əˈvɛnt həˈɹaɪ.zən/ |
| Letters | 13 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “event horizon” in English
Rare enough to double-check
event horizon is uncommon English outside the top frequency list, classed as anoun, transcribed /əˈvɛnt həˈɹaɪ.zən/. Rarity is why readers land here mid-draft. 3 senses are on record.
No misspelling variants are generated for event horizon in our index, suggesting the orthography follows predictable English patterns. No confusable counterpart is on file for this word, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Our source data has no etymology on file for this entry, so its spelling is best read as a straightforward mapping from sound to letter. The correct English form is event horizon, spelled E-V-E-N-T- -H-O-R-I-Z-O-N.
Definition
- 1The gravitational sphere of a black hole within which the escape velocity is greater than the speed of light.
- 2The furthest distance in the past of the universe from which light signals from an event can reach an observer at later times.
- 3A point of no return.
This word in other languages
Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.