Quintilllion

Quintilllion Quin*till"lion, n. [Formed fr. L. quintus the fifth, after the analogy of million: cf. F. quintillion. See {Quint}.] According to the French notation, which is used on the Continent and in America, the cube of a million, or a unit with eighteen ciphers annexed; according to the English notation, a number produced by involving a million to the fifth power, or a unit with thirty ciphers annexed. See the Note under {Numeration}. [1913 Webster]