var·i·ant /ˈvɛriənt, ˈvær-/
  變體,異體(a.)不同的,差別的
  var·i·ant /ˈvɛrɪənt, ˈvær-/ 形容詞
  變異體,變型,變種,可變的
  variant
  變體
  Va·ri·ant a.
  1. Varying in form, character, or the like; variable; different; diverse.
  2. Changeable; changing; fickle. [Obs.]
     He is so variant, he abit [abides] nowhere.   --Chaucer.
  Va·ri·ant n.  Something which differs in form from another thing, though really the same; as, a variant from a type in natural history; a variant of a story or a word.
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  variant
       adj : differing from a norm or standard; "a variant spelling"
       n 1: an event that departs from expectations [syn: discrepancy,
             variance]
       2: (biology) a group of organisms within a species that differ
          in trivial ways from similar groups; "a new strain of
          microorganisms" [syn: form, strain, var.]
       3: a variable quantity that is random [syn: random variable,
          variate, stochastic variable, chance variable]
       4: something a little different from others of the same type;
          "an experimental version of the night fighter"; "an emery
          wheel is a modern variant of the grindstone"; "the boy is
          a younger edition of his father" [syn: version, variation,
           edition]