Phrase guide

open interval

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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No pronunciation record was provided for this word.

1

noun

Meaning 1

An interval in the real number line which does not contain its supremum and infimum. If specified by a pair of real numbers, then it consists of all the points on the real line whose values lie strictly between those two real numbers.

Definition source: English Wiktionary via Wiktextract

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

an interval that does not include its endpoints

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: unbounded interval

Antonyms: closed interval

Broader terms: interval

History

Etymology

No etymology was provided for this word.

Across languages

Translations

12 source translations are retained for this English entry.

  • Asturian: intervalu abiertu — Translations
  • Catalan: interval obert — Translations
  • Chinese Mandarin: 開區間 /开区间 (kāiqūjiān) — Translations
  • Czech: otevřený interval — Translations
  • French: intervalle ouvert — Translations
  • Galician: intervalo aberto — Translations
  • German: offenes Intervall — Translations
  • Italian: intervallo aperto — Translations
  • Korean: 열린구간 (yeollin'gugan) — Translations
  • Korean: 개구간 (gaegugan) — Translations
  • Portuguese: intervalo aberto — Translations
  • Spanish: intervalo abierto — Translations