tril·lion /ˈtrɪ(l)jən/
 百萬的平方,一兆,百萬的立方,大量
 Tril·lion n.  According to the French notation, which is used upon the Continent generally and in the United States, the number expressed by a unit with twelve ciphers annexed; a million millions; according to the English notation, the number produced by involving a million to the third power, or the number represented by a unit with eighteen ciphers annexed. See the Note under Numeration.
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 trillion
      adj 1: one quintillion in Great Britain [syn: a trillion]
      2: one million million in the United States [syn: a trillion]
      n 1: the number that is represented as a one followed by 18
           zeros; "in England they call a quintillion a trillion"
           [syn: one million million million]
      2: the number that is represented as a one followed by 12
         zeros; "in England they call a trillion a billion" [syn: one
         million million, 1000000000000]