cap A cap is a flat headgear, usually with a visor. Caps have crowns that fit very close to the head. They made their first appearance as early as 3200 BC. Caps typically have a visor, or no brim at all. They are popular in casual and informal se ...

is a form of headgear. Cap may refer to:

Aerial warfare

* CAP,

Combat air patrol Combat air patrol (CAP) is a type of flying mission for fighter aircraft. A combat air patrol is an aircraft patrol provided over an objective area, over the force protected, over the critical area of a combat zone, or over an air defense area, ...

is a type of flying mission for fighter aircraft.

Arts and entertainment

* Cap, a character in the comic strip '' Cap Stubbs and Tippie'' * '' The Cap'', a 1984 Canadian short film * "Cap" (song), a song by KSI featuring Offset from the 2020 album ''Dissimulation''

Health and medicine

Cervical cap The cervical cap is a form of barrier contraception. A cervical cap fits over the cervix and blocks sperm from entering the uterus through the external orifice of the uterus, called the ''os''. Terminology The term ''cervical cap'' has been ...

, a barrier method of contraception *

Crown (dentistry) In dentistry, a crown most commonly refers to a dental cap, a type of dental restoration that completely caps or encircles a tooth or dental implant. A crown may be needed when a large cavity threatens the health of a tooth. A crown is typicall ...

, a type of dental restoration

People

* Cap (nickname), a list of people * Čáp, a list of people with the Czech surname *

Vladislao Cap Vladislao Wenceslao Cap (5 July 1934 – 14 September 1982) was an Argentine football player and manager. As a player he represented his native country at the 1962 FIFA World Cup in Chile as a defender. Twelve years later he was the manager of ...

(1934–1982), Argentine footballer * Cap R. Carden (1866–1935), American politician

Places

* Cap Point, Saint Lucia * Cap River, New Caledonia *

El Capitan El Capitan ( es, El Capitán; "the Captain" or "the Chief") is a vertical Rock formations in the United States, rock formation in Yosemite National Park, on the north side of Yosemite Valley, near its western end. The El Capitan Granite, granit ...

, or "El Cap", a rock formation in Yosemite National Park *

Nga Ying Chau Nga Ying Chau, or Cap Island, was an island off the northeast shore of Tsing Yi Island of Hong Kong, separated by a small harbour, Mun Tsai Tong, with Tsuen Wan at its northeast, just across the Rambler Channel. When the small harbour was reclai ...

or Cap Island, a former island in Hong Kong

Science and technology

Cap set In affine geometry, a cap set is a subset of \mathbb_3^n (an n-dimensional affine space over a three-element field) with no three elements in a line. The cap set problem is the problem of finding the size of the largest possible cap set, as a func ...

, in affine geometry *

CAP theorem In theoretical computer science, the CAP theorem, also named Brewer's theorem after computer scientist Eric Brewer, states that any distributed data store can provide only two of the following three guarantees:Seth Gilbert and Nancy Lynch"Brewer' ...

, related to properties of distributed data stores *

Capricornus Capricornus is one of the constellations of the zodiac. Its name is Latin for "horned goat" or "goat horn" or "having horns like a goat's", and it is commonly represented in the form of a sea goat: a mythical creature that is half goat, half f ...

, an astronomical constellation, whose stars are abbreviated β Cap, δ Cap, etc. *

Five-prime cap In molecular biology, the five-prime cap (5′ cap) is a specially altered nucleotide on the 5′ end of some primary transcripts such as precursor messenger RNA. This process, known as mRNA capping, is highly regulated and vital in the creation o ...

, a special nucleotide added to the 5′ end of some eukaryotic mRNA molecules *

Pileus (mycology) The pileus is the technical name for the cap, or cap-like part, of a basidiocarp or ascocarp (fungal fruiting body) that supports a spore-bearing surface, the hymenium.Moore-Landecker, E: "Fundamentals of the Fungi", page 560. Prentice Hall, 1972 ...

, the cap of a mushroom or related fungi * Cap, a

piping and plumbing fitting A fitting or adapter is used in pipe systems to connect straight sections of pipe or tube, adapt to different sizes or shapes, and for other purposes such as regulating (or measuring) fluid flow. These fittings are used in plumbing to manipulate ...

* Armor-piercing cap (often known simply as a 'cap'), a metal cover on an armor-piercing projectile meant to protect the penetrator and improve armor-penetrating capabilities.

Sports

Cap (sport) In sport, a cap is a player's appearance in a game at international level. The term dates from the practice in the United Kingdom of awarding a cap to every player in an international match of rugby football and association football. In the ea ...

, a term for an athlete's appearance at international level *

Salary cap In professional sports, a salary cap (or wage cap) is an agreement or rule that places a limit on the amount of money that a team can spend on players' salaries. It exists as a per-player limit or a total limit for the team's roster, or both. Sever ...

, an agreement limiting money spent on players' salaries

Other uses

Cap (crown) The cap of a crown is the cap which fills the inner space of a modern crown. While ancient crowns contained no cap, from mediaeval times it became traditional to fill the circlet with a cap of velvet or other such cloth, with a base of ermine. ...

, the cap which fills the inner space of modern crowns * Cap, a winemaking term * Cap, or

Camper shell A camper shell (also canopy, and sometimes called truck topper, truck cap, bed cap, box cap, or simply shell) is a small housing or rigid canopy used as a pickup truck or coupe utility accessory. The housing is usually made of fiberglass or alum ...

, a covering for the rear bed of a pickup truck *

Cap Radio (Morocco) Cap Radio is a private Moroccan radio station based in Tangier.Chipaya language Chipaya (endolinguonym ''Chipay taqu'') is a native South American language of the Uru–Chipaya language family. The only other language in the grouping, Uru, is considered by some to be a divergent dialect of Chipaya. Ethnologue lists the lang ...

, ISO 639-3 language code cap *

Closure (container) A closure is a device used to close or seal a container such as a bottle, jug, jar, tube, or can. A closure may be a cap, cover, lid, plug, liner, or the like. The part of the container to which the closure is applied is called the finish. Ot ...

, often referred to as a cap