What does the word closure mean?

Usage examples for closure

  1. On the other hand, the wheel W has the full number of contact surfaces, because it must provide for the operative closure of the press- magnet circuit whether the brush B' is in engagement with a metallic segment or an insulated segment of the wheel W'. – Edison, His Life and Inventions by Frank Lewis Dyer and Thomas Commerford Martin
  2. To London we must take it, for this reason- the closure of this case is no jeweler's work; of that I have quite convinced myself. – Erema My Father's Sin by R. D. Blackmore
  3. Far wiser was the old system of provincial legislature, in which the people were really represented, a system in which personality counted for much and men were brought into familiar and friendly relations with each other, not kept apart by the rubicon of red- tapeism, and liable to have the door of the Closure slammed in their faces at some critical juncture of discussion, and the subject shelved. – Memoir and Letters of Francis W. Newman by Giberne Sieveking