quin·tu·ple /kwɪnˈtupəl, ˈtju, ˈtʌ; ˈkwɪntə-/
  (a.)五倍的,五重的,五部分構成的五倍量,五個一組(vt.)使成五倍
  quintuple
  五倍的; ( 使 )成五倍; 乘5 ; 五元組; 五元集
  quintuple
  五元 五倍
  Quin·tu·ple a.  Multiplied by five; increased to five times the amount; fivefold.
  Quintuple time Mus., a time having five beats in a measure. It is seldom used.
  Quin·tu·ple, v. t. [imp. & p. p. Quintupled p. pr. & vb. n. Quintupling.]  To make fivefold, or five times as much or many.
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  quintuple
       adj : having five units or components [syn: fivefold]
       v : increase fivefold; "The population of China quintupled"