Category:Quadrillion

Quad*ril"lion, n. Etym: [f., fr. L. quater four times, akin to Quattuor four, e. four; -- formed like million. See four, million.]

Defn: 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.