'Trillion' definitions:
Definition of 'trillion'
From: WordNet
adjective
One quintillion in Great Britain
adjective
One million million in the United States
noun
A very large indefinite number (usually hyperbole); "there were millions of flies" [syn: million, billion, trillion, zillion, jillion, gazillion]
noun
The number that is represented as a one followed by 18 zeros; "in England they call a quintillion a trillion" [syn: trillion, one million million million]
noun
The number that is represented as a one followed by 12 zeros; "in England they call a trillion a billion" [syn: trillion, one million million, 1000000000000]
Definition of 'Trillion'
From: GCIDE
- Trillion \Tril"lion\, n. [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. [1913 Webster]