Doublet vs Dual - What's the difference?
doublet | dual |
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
Either of two dice, each of which, when thrown, has the same number of spots on the face lying uppermost.
(uncountable) A game somewhat like backgammon.
Exhibiting duality; characterized by having two (usually equivalent) components.
Acting as a counterpart.
Double.
(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)
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.
(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.
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.doublet
English
Noun
(en noun)- 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
- to throw doublets
- (Halliwell)
Quotations
; jacket * 1602 : , act 2 scene 1 line 75 *: Lord Hamlet, with his doublet all unbraced, *See also
* homolog * pair * twin (coefficient)dual
English
Alternative forms
*Adjective
(-)- dual-headed computer
Derived terms
* duality * dualismNoun
(en noun)- The octahedron is the dual of the cube.