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dual
 
Adjective dual has 3 senses
  1. double, dual, duple - consisting of or involving two parts or components usually in pairs; "an egg with a double yolk"; "a double (binary) star"; "double doors"; "dual controls for pilot and copilot"; "duple (or double) time consists of two (or a multiple of two) beats to a measure"
    Antonym: single (indirect, via multiple)
  2. double, dual, twofold, treble, threefold - having more than one decidedly dissimilar aspects or qualities; "a double (or dual) role for an actor"; "the office of a clergyman is twofold; public preaching and private influence"- R.W.Emerson; "every episode has its double and treble meaning"-Frederick Harrison
    Antonym: single (indirect, via multiple)
  3. dual - a grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural); "ancient Greek had the dual form but it has merged with the plural form in modern Greek"
    Antonym:     singular (indirect, via plural)
du bois du hast du joir du maurier du pont duad dual-intent dual-lane dual dual carriageway dual factor theory dual inline package switch dual master cylinder dual of denominate number dual scan display dualism dualist

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