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Fold, folding or foldable may refer to:


Arts, entertainment, and media

* ''Fold'' (album), the debut release by Australian rock band Epicure *
Fold (poker) In the game of poker, the play largely centers on the act of betting, and as such, a protocol has been developed to speed up play, lessen confusion, and increase security while playing. Different games are played using different types of bets, a ...
, in the game of poker, to discard one's hand and forfeit interest in the current pot *
Above the fold Above the fold is the upper half of the front page of a newspaper or tabloid where an important news story or photograph is often located. Papers are often displayed to customers folded so that only the top half of the front page is visible. Th ...
and below the fold, the positioning of news items on a newspaper's front page according to perceived importance *
Paper folding ) is the Japanese art of paper folding. In modern usage, the word "origami" is often used as an inclusive term for all folding practices, regardless of their culture of origin. The goal is to transform a flat square sheet of paper into a fi ...
, or ''origami'', the art of folding paper


Science, technology, and mathematics


Biology

*
Protein folding Protein folding is the physical process by which a protein chain is translated to its native three-dimensional structure, typically a "folded" conformation by which the protein becomes biologically functional. Via an expeditious and reproduci ...
, the physical process by which a polypeptide folds into its characteristic and functional three-dimensional structure **
Folding@home Folding@home (FAH or F@h) is a volunteer computing project aimed to help scientists develop new therapeutics for a variety of diseases by the means of simulating protein dynamics. This includes the process of protein folding and the movements ...
, a powerful distributed-computing project for simulating protein folding *
Fold coverage In genetics, shotgun sequencing is a method used for sequencing random DNA strands. It is named by analogy with the rapidly expanding, quasi-random shot grouping of a shotgun. The chain-termination method of DNA sequencing ("Sanger sequencing ...
, quality of a DNA sequence *
Skin fold Skin folds or skinfolds are areas of skin that are naturally folded. Many skin folds are distinct, heritable anatomical features, and may be used for identification of animal species, while others are non-specific and may be produced either by ind ...
, an area of skin that folds


Computing

*
Fold (higher-order function) In functional programming, fold (also termed reduce, accumulate, aggregate, compress, or inject) refers to a family of higher-order functions that analyze a recursive data structure and through use of a given combining operation, recombine the res ...
, a type of programming operation on data structures *
fold (Unix) fold is a Unix command used for making a file with long lines more readable on a limited width computer terminal by performing a line wrap. Most Unix terminals have a default screen width of 80, and therefore reading files with long lines could g ...
, a computer program used to wrap lines to fit in a specified width *
Folding (DSP implementation) Folding is a transformation technique using in DSP architecture implementation for minimizing the number of functional blocks in synthesizing DSP architecture. Folding was first developed by Keshab K. Parhi and his students in 1992. Its concept i ...
, a transformation technique using in DSP architecture implementation *
Folding (signal processing) In signal processing and related disciplines, aliasing is an effect that causes different signals to become indistinguishable (or ''aliases'' of one another) when sampled. It also often refers to the distortion or artifact that results when a ...
, an aspect of aliasing *
Folding editor Code or text folding, or less commonly holophrasting, is a feature of some graphical user interfaces that allows the user to selectively hide ("fold") or display ("unfold") parts of a document. This allows the user to manage large amounts of text ...
, a text editor that supports text folding or code folding, allowing the user to hide and reveal blocks of text * case folding is the conversion of letter case in a string * Constant folding, a compiler optimization technique *
Folding@home Folding@home (FAH or F@h) is a volunteer computing project aimed to help scientists develop new therapeutics for a variety of diseases by the means of simulating protein dynamics. This includes the process of protein folding and the movements ...
, a powerful distributed-computing project for simulating protein folding


Electronics

* Foldable display *
Flexible display A flexible display or rollable display is an electronic visual display which is flexible in nature, as opposed to the traditional flat screen displays used in most electronic devices. In recent years there has been a growing interest from nume ...


Other uses in science and mathematics

*
Fold (geology) In structural geology, a fold is a stack of originally planar surfaces, such as sedimentary strata, that are bent or curved during permanent deformation. Folds in rocks vary in size from microscopic crinkles to mountain-sized folds. They occur ...
, one or a stack of originally flat and planar surfaces that are bent or curved as a result of plastic deformation *
Fold (higher-order function) In functional programming, fold (also termed reduce, accumulate, aggregate, compress, or inject) refers to a family of higher-order functions that analyze a recursive data structure and through use of a given combining operation, recombine the res ...
, in functional programming, fold refers to a family of higher-order functions that analyze a recursive data structure and through use of a given combining opera *
Folding (chemistry) In chemistry, folding is the process by which a molecule assumes its shape or conformation. The process can also be described as intramolecular self-assembly, a type of molecular self-assembly, where the molecule is directed to form a specifi ...
, the process by which a molecule assumes its shape or conformation * Folding (Dynkin diagram), in Lie theory, a way of obtaining one Dynkin diagram from another *
Fold change Fold change is a measure describing how much a quantity changes between an original and a subsequent measurement. It is defined as the ratio between the two quantities; for quantities ''A'' and ''B'' the fold change of ''B'' with respect to ''A'' ...
, a measure of the difference between two quantities *
e-folding In science, ''e''-folding is the time interval in which an exponentially growing quantity increases by a factor of ''e''; it is the base-''e'' analog of doubling time. This term is often used in many areas of science, such as in atmospheric chem ...
, exponential growth or decay *
Polygon folding In geometry, a net of a polyhedron is an arrangement of non-overlapping edge-joined polygons in the plane which can be folded (along edges) to become the faces of the polyhedron. Polyhedral nets are a useful aid to the study of polyhedra and sol ...
, or polyhedron folding


Other uses

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Amicus Therapeutics Amicus Therapeutics is a public American biopharmaceutical company based in Philadelphia, PA. The company went public in 2007 under the NASDAQ trading symbol FOLD. This followed a 2006 planned offering and subsequent withdrawal, which would have ...
, NASDAQ stock trading symbol FOLD *
Book folding Book folding is the stage of the book production process in which the pages of the book are folded after printing and before binding. Until the middle of the 19th century, book folding was done by hand, and was a trade. In the 1880s and 1890s, b ...
, in book production *
Foldable smartphone A foldable smartphone (also known as a foldable phone or simply foldable) is a smartphone with a folding form factor. Some variants of the concept use multiple touchscreen panels on a hinge, while other designs utilise a flexible display. Conce ...
, a smartphone with a folding form factor *
Folding bicycle A folding bicycle is a bicycle designed to fold into a compact form, facilitating transport and storage. When folded, the bikes can be more easily carried into buildings, on public transportation (facilitating mixed-mode commuting and bicycl ...
, a bicycle designed to fold into a compact form *
Folding clothes Clothing (also known as clothes, apparel, and attire) are items worn on the body. Typically, clothing is made of fabrics or textiles, but over time it has included garments made from animal skin and other thin sheets of materials and natural ...
, allows apparel to be stored compactly, prevents unwanted creasing, preserves wanted creases, and presents them in a pleasing manner, for instance when displayed on sale in stores *
Pen (enclosure) A pen is an enclosure for holding livestock. It may also perhaps be used as a term for an enclosure for other animals such as pets that are unwanted inside the house. The term describes types of enclosures that may confine one or many animal ...
, or sheep fold, a sheep pen in British English *
Samsung Galaxy Fold The Samsung Galaxy Fold is an Android-based foldable smartphone developed by Samsung Electronics. Unveiled on March 20, 2019, it was released on September 6, 2019 in South Korea. The device is capable of being folded open to expose a 7.3-inch ...
, a smartphone *
Scottish Fold The Scottish Fold is a breed of domestic cat with a natural dominant gene mutation that affects cartilage throughout the body, causing the ears to "fold", bending forward and down towards the front of the head, which gives the cat what is o ...
, a cat breed


See also

* * *
Bend (disambiguation) Bend may refer to: Materials * Bend, a curvature in a pipe, tube, or pipeline (see Bend radius) * Bend knot, a knot used to tie two ropes together; see List of bend knots *Bending, the deformation of an object due to an applied load Music Music ...
*
Crease (disambiguation) Crease may refer to: * A line (geometry) or mark made by folding or doubling any pliable substance * Crease (band), American hard rock band that formed in Ft. Lauderdale, Florida in 1994 * Crease pattern, origami diagram type that consists of all ...
*
Folder (disambiguation) Folder most commonly refers to: *Folder, one who folds laundry or dry cleaning, e.g., (see Fluff and Fold) * File folder, a kind of folder that holds loose sheets of paper Folder or folding may also refer to: People * Pole Folder, stage nam ...
{{Disambiguation