Trillion
WordNet
adjective
(1) One million million in the United States
(2) One quintillion in Great Britain
noun
(3) The number that is represented as a one followed by 12 zeros
"In England they call a trillion a billion"
(4) The number that is represented as a one followed by 18 zeros
"In England they call a quintillion a trillion"
(5) A very large indefinite number (usually hyperbole)
"There were millions of flies"
WiktionaryText
Etymology
From . From the prefix tri- (three) + -illion (from million); ie a million million million.
Coined by Jehan Adam in 1475 as trimillion.
Rendered as tryllion by Nicolas Chuquet in 1484, in his article “Triparty en la science des nombres”.
Cardinal number
trillion
- (US; modern British & Australian, short scale) A million million: 1 followed by twelve zeros, 1012.
- (dated British & Australian, long scale) A million million million: 1 followed by eighteen zeros, 1018.
- Western (Arabic) Numeral trillion, 1012 short scale, 1018 long scale
- Previous: billion: short scale 109, long scale 1012
- Next: quadrillion: short scale 1015, long scale 1024
- ISO prefix: tera-