Void may refer to:

Science, engineering, and technology

* 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 vacuum is a space devoid of matter. The word is derived from the Latin adjective ''vacuus'' for "vacant" or " void". An approximation to such vacuum is a region with a gaseous pressure much less than atmospheric pressure. Physicists often di ...

, 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 moulding * VoID or Vocabulary of Interlinked Datasets, an RDF vocabulary to enable the discovery and use of linked data sets *

Void coefficient In nuclear engineering, the void coefficient (more properly called void coefficient of reactivity) is a number that can be used to estimate how much the reactivity of a nuclear reactor changes as voids (typically steam bubbles) form in the reactor ...

, the change in the reactivity of a nuclear reactor when voids form in moderator or coolant fluids *

Void Linux Void Linux is an independent Linux distribution that uses the X Binary Package System (XBPS) package manager, which was designed and implemented from scratch, and the runit init system. Excluding binary kernel blobs, a base install is composed ...

, a Linux distribution * 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 The void type, in several programming languages derived from C and Algol68, is the return type of a function that returns normally, but does not provide a result value to its caller. Usually such functions are called for their side effects, ...

, in programming languages, a keyword indicating the absence of data * Void set or empty set, the mathematical set with no elements

Arts, entertainment, and media

Characters

* Void, a malevolent alter ego of superhero

Sentry (Robert Reynolds) Sentry (Robert "Bob" Reynolds) is a fictional character and superhero appearing in American comic books published by Marvel Comics. The character first appears in ''The Sentry'' #1 (September 2000), and was created by Paul Jenkins and Jae Lee w ...

* Void (comics), one of the original team of the Wildcats * Void, the main antagonist in the 2000 video game '' Sonic Shuffle'' * Voids, the villains in the

Zbots Zbots (or Z-Bots) are small action figures that were made by Galoob and first released in 1992. Galoob released four series of Zbots from 1992 to 1994. Galoob also created a number of Zbot vehicles alongside the figures. The heroes were the ZBo ...

action-figures franchise * Void Termina, Void Soul, and Void, the main villain(s) in '' Kirby Star Allies'' * Void, a member of the God Hand and one of the main villains in '' Berserk''

Films

* ''Void'' (film), a 2013 Lebanese film

Literature

* ''

A Void ''A Void'', translated from the original French ( "The Disappearance"), is a 300-page French lipogrammatic novel, written in 1969 by Georges Perec, entirely without using the letter '' e'', following Oulipo constraints. Translations It was tr ...

'', a 1969 French novel written without using the letter ''e'' by Georges Perec * '' Void Trilogy'', a science-fiction series by Peter F. Hamilton

Music

* Void (band), a Washington, D.C.-based hardcore punk band * ''Void'' (Intronaut album), 2006 * ''VOID'' (NaNa album), a 1999 album by Japanese pop/rock musical duo NaNa * ''Void'' (Vanna album), 2014 * '' VOID (Video Overview in Deceleration)'', a 2005 DVD by the Flaming Lips * '' ØØ Void'', a 2000 album by Sunn O))) * ''Voids'' (album), a 2017 album by Minus the Bear * ''Void'' (EP), an EP by Destroy the Runner

Other arts, entertainment, and media

* Void (cards), to have no cards of a particular suit in one's hand during a card game * ''Void'' (fanzine), a major science-fiction fanzine started in the 1950s * '' Void Indigo'', a comic book series written by Steve Gerber and drawn by Val Mayerik

Religion and philosophy

The Void (philosophy) The Void is the philosophical concept of nothingness manifested. The notion of the Void is relevant to several realms of metaphysics. The Void is also prevalent in numerous facets of psychology, notably logotherapy. The manifestation of nothingnes ...

Void (classical element) According to ancient and History of science in the Middle Ages, medieval science, aether (, alternative spellings include ''æther'', ''aither'', and ''ether''), also known as the fifth element or quintessence, is the material that fills the regio ...

, English for ''Kū'', one of the five elements in Japanese Buddhism * ''

Śūnyatā ''Śūnyatā'' ( sa, शून्यता, śūnyatā; pi, suññatā) pronounced in English as (shoon-ya-ta), translated most often as ''emptiness'', ''vacuity'', and sometimes ''voidness'', is a Buddhist concept which has multiple meani ...

'', a Buddhist philosophical concept translated most often as emptiness and sometimes voidness

Other uses

Void (law) In law, void means of no legal effect. An action, document, or transaction which is void is of no legal effect whatsoever: an absolute nullity—the law treats it as if it had never existed or happened. The term void ''ab initio'', which means ...

, an action, document or transaction that has no legal effect * Nothing