Doublet vs Dual - What's the difference?

doublet | dual |

As nouns the difference between doublet and dual

is that doublet is a man’s close-fitting jacket, with or without sleeves men in europe wore doublets from the 1400s to the 1600s while dual is dual.




(en noun)
  • a man’s close-fitting jacket, with or without sleeves. Men in Europe wore doublets from the 1400s to the 1600s.
  • a pair of two similar or equal things; couple.
  • (linguistics) one of two or more different words in a language derived from the same origin but coming by different routes (e.g., toucher'' and ''toquer'' in French or ''yard'' and ''garden in English).
  • (literature) In textual criticism, two different narrative accounts of the same actual event.
  • (lapidary) An imitation gem made of two pieces of glass or crystal with a layer of color between them.
  • (printing, US) A word or phrase set a second time by mistake.
  • (quantum mechanics) A quantum state of a system with a spin of 1/2, such that there are two allowed values of the spin component, -1/2 and +1/2.
  • (computing) A word (or rather, a halfword) consisting of two bytes
  • (botany) A very small flowering plant,
  • A word ladder puzzle.
  • An arrangement of two lenses for a microscope, designed to correct spherical aberration and chromatic dispersion, thus rendering the image of an object more clear and distinct.
  • * 1855 , Hermann Schacht, Frederick Currey, The Microscope
  • The doublet generally used is that invented by Dr. Wollaston, and consists of two plano-convex lenses placed with their convex sides towards the eye
  • Either of two dice, each of which, when thrown, has the same number of spots on the face lying uppermost.
  • to throw doublets
  • (uncountable) A game somewhat like backgammon.
  • (Halliwell)


    ; jacket * 1602 : , act 2 scene 1 line 75 *: Lord Hamlet, with his doublet all unbraced, *

    See also

    * homolog * pair * twin (coefficient)



    Alternative forms



  • Exhibiting duality; characterized by having two (usually equivalent) components.
  • Acting as a counterpart.
  • Double.
  • dual-headed computer
  • (grammar) Pertaining to grammatical number (as in singular and plural), referring to two of something, such as a pair of shoes, in the context of the singular', '''plural''' and in some languages, ' trial grammatical number. Modern Arabic displays a dual number, as did Homeric Greek.
  • (linear algebra)
  • (category theory)
  • Derived terms

    * duality * dualism


    (en noun)
  • Of an item that is one of a pair, the other item in the pair.
  • (geometry) Of a regular polyhedron with V'' vertices and ''F'' faces, the regular polyhedron having ''F'' vertices and ''V faces.
  • The octahedron is the dual of the cube.
  • (grammar) dual number The grammatical number of a noun marking two of something (as in singular, dual, plural), sometimes referring to two of anything (a couple of', ' exactly two of ), or a chirality-marked pair (as in left and right, as with gloves or shoes) or in some languages as a discourse marker, "between you and me". A few languages display trial number.
  • (mathematics) Of a vector in an inner product space, the linear functional corresponding to taking the inner product with that vector. The set of all duals is a vector space called the dual space.
  • See also

    * * unal * duel


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