Void

Void may refer to:

Science and engineering

Void (astronomy), the spaces between galaxy filaments that contain no galaxies
Void (composites), a pore that remains unoccupied in a composite material
Void, synonym for vacuum, a space containing no matter
Void, a bubble within a mechanical part that causes cavitation when it collapses
Void, an unwanted air pocket formed during injection molding
Void coefficient, the change in the reactivity of a nuclear reactor when voids form in moderator or coolant fluids
Void ratio, the volume of void-space to solid space in a material
Void safety, in object-oriented programming, a guarantee that no object references will have null values
Void type, in programming languages, a keyword indicating the absence of type information
VoID or Vocabulary of Interlinked Datasets, an RDF vocabulary to enable the discovery and use of linked data sets

Void (comics), a comic-book character in the Wildstorm Universe
Void (fanzine), a major science-fiction fanzine started in the 1950s
Void (film), a 2013 Lebanese film
Void, a malevolent alter ego of superhero Sentry (Robert Reynolds)
A Void (novel), a 1969 French novel written without using the letter e by Georges Perec
Void Indigo, a comic book series written by Steve Gerber and drawn by Val Mayerik
Void Trilogy, a science-fiction series by Peter F. Hamilton

Void (cards), to have no cards of a particular suit in one's hand during a card game
Void (law), an action, document or transaction that has no legal effect
Void[ness], or Śūnyatā, a Buddhist philosophical concept
Void, English for Kū, one of the five elements in Japanese Buddhism
Void, the main antagonist in the 2000 video game Sonic Shuffle
Void, a medical version of urinate
Voids, the villains in the Zbots action-figures franchise