# What is dual?

• (adj): Consisting of or involving two parts or components usually in pairs.
Example: "Dual controls for pilot and copilot"
Synonyms: double, duple

### Some articles on dual:

Dual - Media
... Dual (album), an album of traditional Scottish and Irish music recorded by Éamonn Doorley, Muireann Nic Amhlaoibh, Julie Fowlis and Ross Martin, released ...
... The road is a mixture of dual carriageway and single carriageway, with the section east of Low Newton, Cumbria to the M6 being mainly dual ... Further dual sections are south of Newby Bridge, south of Greenodd and south of Ulverston ...
Dual Code
... In coding theory, the dual code of a linear code is the linear code defined by where is a scalar product ... In linear algebra terms, the dual code is the annihilator of C with respect to the bilinear form ... The dimension of C and its dual always add up to the length n A generator matrix for the dual code is a parity-check matrix for the original code and vice versa ...
Dual Code - Self-dual Codes
... A self-dual code is one which is its own dual ... If a self-dual code is such that each codeword's weight is a multiple of some constant, then it is of one of the following four types Type I codes are ... Type II codes are binary self-dual codes which are doubly even ...
Dual-use Technology
... Dual use goods are products and technologies normally used for civilian purposes but which may have military applications ... -European Commision, Trade Topics, Dual Use “ ” Dual-use is a term often used in politics and diplomacy to refer to technology which can be used for both peaceful and military aims ... More generally speaking, dual-use can also refer to any technology which can satisfy more than one goal at any given time ...

### More definitions of "dual":

• (adj): A grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural).
Example: "Ancient Greek had the dual form but it has merged with the plural form in modern Greek"

### Famous quotes containing the word dual:

Thee for my recitative,
Thee in the driving storm even as now, the snow, the winter-day
declining,
Thee in thy panoply, thy measur’d dual throbbing and thy beat
convulsive,
Thy black cylindric body, golden brass and silvery steel,
Walt Whitman (1819–1892)