Oc*til"lion (?), n. [L. octo eight + -illion, as in E. million: cf. F.
octillion.] According to the French method of numeration (which method
is followed also in the United States) the number expressed by a unit
with twenty-seven ciphers annexed. According to the English method, the
number expressed by a unit with forty-eight ciphers annexed. See
Numeration.
{ Oc"to- (?), Oc"ta- (?) }. [L. octo eight, Gr. &?;, with a combining
form &?;. Cf. Eight.] A combining form meaning eight; as in
octodecimal, octodecimal, octolocular.
Oc"to*ate (?), n. (Chem.) A salt of an octoic acid; a caprylate.
Oc*to"ber (?), n. [L., the eighth month of the primitive Roman year,
which began in March, fr. octo eight: cf.F. Octobre. See Octave.] 1.
The tenth month of the year, containing thirty-one days.