Quadrillion
WordNet
noun
(1) The number that is represented as a one followed by 15 zeros
(2) The number that is represented as a one followed by 24 zeros
"In England they call a septillion a quadrillion"
WiktionaryText
Etymology
From the prefix quadr- (four) + -illion (from million); ie a million million million million.
Cardinal number
quadrillion
- (US; modern British & Australian, short scale) A thousand trillion: 1 followed by fifteen zeros, 1015.
- (dated British & Australian, long scale) A million trillion: 1 followed by twenty-four zeros, 1024.
- Western (Arabic) Numeral quadrillion, 1015 short scale, 1024 long scale
- Previous: trillion: short scale 1012, long scale 1018
- Next: quintillion: short scale 1018, long scale 1030
- ISO prefix: peta- (short scale), yotta- (long scale).
Synonyms
- 1015: a long scale billiard
- 1024: a short scale septillion
Noun
- Any very large number, exceeding normal description.