(n.) According to the French notation, which is followed also upon the Continent and in the United States, a unit with fifteen ciphers annexed; according to the English notation, the number produced by involving a million to the fourth power, or the number represented by a unit with twenty-four ciphers annexed. See the Note under Numeration.
Example Sentences:
(1) According to the US Energy Information Administration, global energy demand will increase from 524 quadrillion British thermal units in 2010 to 820 quadrillion Btu in 2040 – a 30-year increase of 56%.
(2) Now DNA is used, which can identify an individual using his DNA to one in a billion, quadrillion or greater.
(3) The exabyte, a one followed by 18 zeroes worth of bytes; the petaflop, one quadrillion calculations performed in a single second.
(4) You can't tell what an individual molecule is going to do, but if you deal with trillions and quadrillions and quintillions, you can tell very accurately what they're going to do on average.
(5) Current levels of 2,3,7,8-tetrachlorodibenzo-p-dioxin (2,3,7,8-TCDD) in the general population can be accounted for by an average level of 133 or 27 ppq (parts per quadrillion) in food based on an estimated half-life in humans of 1 or 5 yr, respectively.
(6) Oh, and a German "Billiarde" is a French "quadrillion" .