Standard Lemma guide

half-open

adj · 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

adj

Meaning 1

partially open; ajar

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adj

Meaning 2

(referring to an interval on the real line) containing only one of its endpoints

Definition source: English Wiktionary via Wiktextract

Usage: not-comparable

Topics: mathematics, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

From half- + open.

Across languages

Translations

10 source translations are retained for this English entry.

  • Danish: halvåben — partially open
  • Italian: semiaperto — partially open
  • Latin: sēmiapertus — partially open
  • Latin: sēmipatens — partially open
  • Latin: sēmihians — partially open
  • Norman: entr'ouvèrt — partially open
  • Polish: półotwarty — partially open
  • Spanish: semiabierto — partially open
  • Danish: halvåben — mathematics: containing only one of its endpoints
  • Polish: półotwarty — mathematics: containing only one of its endpoints