Trillion

n.

1.

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.

Noun	1.	trillion - the number that is represented as a one followed by 18 zeros; "in England they call a quintillion a trillion" Synonyms: one million million million
	2.	trillion - the number that is represented as a one followed by 12 zeros; "in England they call a trillion a billion" Synonyms: 1000000000000, one million million
Adj.	1.	trillion - one quintillion in Great Britain Synonyms: a trillion
	2.	trillion - one million million in the United States Synonyms: a trillion

(mathematics)

trillion - In Britain, France, and Germany, 10^18 or a million cubed. In the USA and Canada, 10^12.

a trillion, Britain, cardinal, GB, Great Britain, UK, United Kingdom, United Kingdom of Great Britain and Northern Ireland