Doublet is a word derived from the Latin ''duplus'', "twofold, twice as much", and is used to indicate a pair of identical, similar, or related things. Doublet may refer to:

Apparel

* Doublet (clothing), a man's snug-fitting buttoned jacket that was worn from the late 14th century to the mid 17th century *

Doublet (Highland dress) Doublet is the term describing any of several types of jacket worn with Scottish highland dress; referring to both uniform and evening jackets. Uniform doublets are found in a number of different styles. Commonly they are short cut with four I ...

, a formal jacket worn with Scottish highland dress

Games

Doublet (dominoes) The following is a glossary of terms used in dominoes. Besides the terms listed here, there are numerous regional or local slang terms. Terms in this glossary should not be game-specific, i.e. specific to one particular version of dominoes, but a ...

, a domino tile in which both ends have the same value *

Doublets (game) Doublets or queen's game is an historical English tables game for two people which was popular in the 17th and 18th centuries. Although played on a board similar to that now used for backgammon, it is a simple game of hazard bearing little resemb ...

, old English tables game in the same family as Backgammon * Word ladder or "doublets", a word game invented by Lewis Carroll

Science and technology

* Doublet (computing), a group of 16 bits in computing * Doublet (lens), a type of lens, made up of two stacked layers with different refractive indices * Doublet (linguistics), two or more words of the same language that come from the same root *

Doublet (potential flow) In fluid dynamics, potential flow (or ideal flow) describes the velocity field as the gradient of a scalar function: the velocity potential. As a result, a potential flow is characterized by an irrotational velocity field, which is a valid app ...

, fluid flow due to a source–sink combination *Doublet, or ''

dimeresia ''Dimeresia'' is a monotypic genus in the sunflower family containing the single species ''Dimeresia howellii'', known by the common name doublet. Distribution This uncommon plant is endemic to an area of the Great Basin region in the western U ...

howellii'', a tiny flowering plant * Doublet earthquake, two earthquakes associated by space and time * Doublet state, a state in quantum physics of a system with a spin of *

Unit doublet In mathematics, the unit doublet is the derivative of the Dirac delta function. It can be used to differentiate signals in electrical engineering: If ''u''1 is the unit doublet, then : (x * u_1)(t) = \frac where * is the convolution In ...

, in mathematics, the derivative of the Dirac delta function

Other uses

Doublet (horse) Doublet (b. 1963 - †.1974) was a Thoroughbred cross gelding. Doublet was a successful performer in the sport of Eventing, in which he was the regular mount of Princess Anne. Doublet was ridden by Princess Anne when winning the gold medal in th ...

, (b. 1963 - †.1974), a thoroughbred gelding *

Doublet (lapidary) A doublet is a type of assembled gem composed in two sections. It is sometimes used to imitate other, more expensive gems. A garnet and glass doublet uses a top portion of natural garnet fused to any color of glass to imitate a gem. The color ...

, an assembled gem composed in two sections, such as a garnet overlaying green glass *Doublet, in textual criticism, two different narrative accounts of the same actual event *

Pierre Jean Louis Ovide Doublet Pierre Jean Louis Ovide Doublet (25 August 1749 - 4 February 1824) was a French politician and writer who spent much of his life serving in the Knights Hospitaller, Knights of Malta. Following his enlistment as a soldier, he entered the service ...

(1749–1824), French politician and writer affiliated with the Order of Malta *

Michel Doublet Michel Doublet (26 September 1939 – 18 August 2022) was a French politician, senator A senate is a deliberative assembly, often the upper house or chamber of a bicameral legislature. The name comes from the ancient Roman Senate ( ...

(1939–2022), French politician. {{disambiguation, surname