Stack may refer to:

Places

Stack Island Stack Island is an island game reserve, with an area of 23.7 hectare, ha and a high point 54 m above sea-level, in Bass Strait, south-eastern Australia. It is part of Tasmania’s Hunter Island Group which lies between north-west Tasmania and K ...

, an island game reserve in Bass Strait, south-eastern Australia, in Tasmania’s Hunter Island Group *

Blue Stack Mountains The Blue Stack Mountains or Bluestack Mountains, also called the Croaghgorms (), are the major mountain range in the south of County Donegal, Ireland. They provide a barrier between the south of the county, such as Donegal Town and Ballyshanno ...

, in Co. Donegal, Ireland

People

* Stack (surname) (including a list of people with the name) * Parnell "Stacks" Edwards, a key associate in the

Lufthansa heist The Lufthansa heist was a robbery which took place at New York City's John F. Kennedy International Airport on December 11, 1978. An estimated US$5.875 million (equivalent to US$28.32 million in 2024) was stolen, with $5 million i ...

* Robert Stack Pierce (1933–2016), an American actor and baseball player *

Robert Stack Robert Stack (born Charles Langford Modini Stack; January 13, 1919 – May 14, 2003) was an American actor and television host. Known for his deep voice and commanding presence, he appeared in over forty feature films. He starred in the America ...

(1919 – 2003), and American actor and television show host * Brian "Stack" Stevens (1941–2017), a Cornish rugby player

Arts, entertainment, and media

* ''

Stack magazine ''Stack'' is a sports performance and athlete lifestyle publication targeted at high school student athletes. Double issues of ''STACK Magazine'' are distributed free of cost three times per year to 13,500 high schools nationwide (about 75% of a ...

'', a bimonthly publication about high school sports * ''Stacks'' (album), a 2005 album by Bernie Marsden * Stacks, trailer parks that were made vertical, in the film '' Ready Player One''

Computing

Stack (abstract data type) In computer science, a stack is an abstract data type that serves as a collection (abstract data type), collection of elements with two main operations: * Push, which adds an element to the collection, and * Pop, which removes the most recent ...

, abstract data type and data structure based on the principle of last in first out * Stack (Haskell), a tool to build Haskell projects and manage their dependencies * Stack in Macintosh, one of a collection of documents created with

HyperCard HyperCard is a application software, software application and software development kit, development kit for Apple Macintosh and Apple IIGS computers. It is among the first successful hypermedia systems predating the World Wide Web. HyperCard com ...

(as in a stack of virtual cards) * Stack in LiveCode, one of a collection of program scripts created with LiveCode's ''Transcript'' programming language *

Call stack In computer science, a call stack is a Stack (abstract data type), stack data structure that stores information about the active subroutines and block (programming), inline blocks of a computer program. This type of stack is also known as an exe ...

, stack data structure that stores information about the active subroutines of a computer program *

Stack machine In computer science, computer engineering and programming language implementations, a stack machine is a computer processor or a Virtual machine#Process virtual machines, process virtual machine in which the primary interaction is moving short- ...

, an architecture centered around a pushdown stack *

Protocol stack The protocol stack or network stack is an implementation of a computer networking protocol suite or protocol family. Some of these terms are used interchangeably but strictly speaking, the ''suite'' is the definition of the communication protoc ...

, a particular software implementation of a computer networking protocol suite *

Solution stack In computing, a solution stack or software stack is a set of software subsystems or components needed to create a complete platform such that no additional software is needed to support applications. Applications are said to "run on" or "run on ...

, a group of software systems, increasing in abstraction from bottom to top *

Stack-based memory allocation Stacks in computing architectures are regions of memory where data is added or removed in a last-in-first-out (LIFO) manner. In most modern computer systems, each thread has a reserved region of memory referred to as its stack. When a func ...

, a memory allocation scheme based on the principle of "last in, first out" *

Stacks (Mac OS) Stacks are a feature found in Apple's macOS, starting in Mac OS X Leopard. As the name implies, they "stack" files into a small organized folder on the Dock. At the WWDC07 keynote presentation, Steve Jobs stated that in Leopard, the user will ...

, a folder view on the Dock of macOS *

Stacks blockchain Stacks, formerly Blockstack, is a layer-2 blockchain The blockchain is a distributed ledger with growing lists of Record (computer science), records (''blocks'') that are securely linked together via Cryptographic hash function, cryptographic ...

, a Bitcoin smart contract platform

Science and technology

Stack (geology) A stack or sea stack is a geological landform consisting of a steep and often vertical column or columns of rock in the sea near a coast, formed by wave erosion. Stacks are formed over time by wind and water, processes of coastal geomorphology. ...

, a large vertical column of rock in the sea *

Stack (mathematics) In mathematics a stack or 2-sheaf is, roughly speaking, a sheaf (mathematics), sheaf that takes values in category (mathematics), categories rather than sets. Stacks are used to formalise some of the main constructions of descent theory, and to con ...

, a sheaf that takes values in categories rather than sets *

Algebraic stack In mathematics, an algebraic stack is a vast generalization of algebraic spaces, or schemes, which are foundational for studying moduli theory. Many moduli spaces are constructed using techniques specific to algebraic stacks, such as Artin's re ...

, a special kind of stack commonly used in algebraic geometry **

Stacks Project The Stacks Project is an open source collaborative mathematics textbook writing project with the aim to cover "algebraic stacks and the algebraic geometry Algebraic geometry is a branch of mathematics which uses abstract algebraic techniques, ...

, an open source collaborative mathematics textbook writing project *

Stacking (chemistry) In chemistry, stacking refers to superposition of molecules or atomic sheets owing to attractive interactions between these molecules or sheets. Metal dichalcogenide compounds Metal dichalcogenides have the formula ME2, where M = a transition me ...

, or pi stacking, attractive, noncovalent interactions between aromatic rings *

Yellow stackhousia ''Stackhousia dielsii'', commonly known as yellow stackhousia, is a species of plant in the family Celastraceae The Celastraceae (staff-vine or bittersweet) are a family of 98 genera and 1,350 species of herbs, vines, shrubs and small trees, b ...

, a plant *

The stack (philosophy) "The stack" is a term used in science and technology studies, the philosophy of technology and media studies to describe the multiple interconnected layers that computation depends on at a planetary scale. The term was introduced by Benjamin H ...

, a political and design theory of planetary-scale computation coined by Benjamin H. Bratton * Stack, an assembled

multistage rocket A multistage rocket or step rocket is a launch vehicle that uses two or more rocket ''stages'', each of which contains its own engines and propellant. A ''tandem'' or ''serial'' stage is mounted on top of another stage; a ''parallel'' stage is ...

* Stack (microelectronics), a two-layer gate insulator in MOSFET, usually high-κ-oxide over SiO₂

Transportation

Operation Stack Operation Stack was a procedure used by Kent Police and the Port of Dover in England to park (or "stack") lorries on the M20 motorway in Kent when services across the English Channel, such as those through the Channel Tunnel or from the ...

, parking lorries on the M20 in Kent, England, when Channel crossings are disrupted * Stack interchange, a free-flowing grade-separated junction between two roads * The Stack, the interchange of I-10 and I-17 in Phoenix, Arizona

Other uses

* Stack Ltd, the company that owns 0verflow * Stack (unit), a US unit of volume for stacked firewood * Amp stack, of guitar amplifiers *

Library stack In library science and architecture, a stack or bookstack (often referred to as a library building's ''stacks'') is a book storage area, as opposed to a reading area. More specifically, this term refers to a narrow-aisled, multilevel system of ir ...

, compactly spaced bookshelves in libraries * Smoke stack or chimney ** Flue-gas stack, the industrial terminology for an industrial plant chimney **

Funnel (ship) A funnel is the smokestack or chimney on a ship used to expel boiler steam and smoke or engine exhaust gas, exhaust. They are also commonly referred to as stacks. Purpose The primary purpose of a ship's funnel(s) is to lift the exhaust gases ...

, the smokestack or chimney on a ship * Stack effect, the movement of air into and out of buildings, chimneys, flue-gas stacks, or other containers