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Webster 1913 Edition

Trillion

Tril′lion

,
Noun.
[F.
trillion
, formed from the pref.
tri-
in imitation of
million
a million. Cf.
Billion
.]
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
.

Webster 1828 Edition

Trillion

TRILLION

,
Noun.
tril'yun. [a word formed arbitrarily of three, or Gr. million.] The product of a million multiplied by a million, and that product multiplied by a million; or the product of the square of a million multiplied by a million. Thus 1,000,000 x 1,000,000=1,000,000,000,000, and this product multiplied by a million= 1,000,000,000,000,000,000.

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