half-open

adjective

partially open; ajar

Meanings

adjectivehalf-open (not comparable)
  1. not comparablepartially open; ajar

    Between the fixed, full-height ends run flexible covers, carried on tubes running in guides, which can be locked in the closed, half-open or fully open positions; [...].

    1964 April, G. Freeman Allen, “The BRB shows traders the Liner train prototypes”, in Modern Railways, page 265
  2. not comparablemathematics(referring to an interval on the real line) containing only one of its endpoints

Origin

Translations

Danish halvåben, halvåben
  • halvåbenpartially open
  • halvåbenmathematics: containing only one of its endpoints
Italian semiaperto
  • semiapertopartially open
Latin sēmiapertus, sēmipatens
  • sēmiapertuspartially open
  • sēmipatenspartially open
  • sēmihianspartially open
Polish półotwarty, półotwarty
  • półotwartypartially open
  • półotwartymathematics: containing only one of its endpoints
Spanish semiabierto
  • semiabiertopartially open
Cite this entry
APA

half-open. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/half-open

MLA

“half-open.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/half-open. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “half-open,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/half-open.

Source: half-open on Wiktionary, CC BY-SA 4.0.