(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.
2. Ale or cider made in that month.
The country gentlemen had a posset or drink they called October.Emerson.
(||Oc*toc"e*ra) n. pl. [NL.] Octocerata.
(||Oc`to*cer"a*ta) n. pl. [NL., fr. Gr. eight + a horn.] (Zoöl.) A suborder of Cephalopoda
including Octopus, Argonauta, and allied genera, having eight arms around the head; called also Octopoda.
(Oc"to*chord) n. (Mus.) See Octachord.
(Oc`todec"i*mo) a. [L. octodecim eighteen. See Octavo, Decimal, and -mo.] Having
eighteen leaves to a sheet; as, an octodecimo form, book, leaf, size, etc.
(Oc`to*dec"i*mo), n.; pl. Octodecimos A book composed of sheets each of which is folded
into eighteen leaves; hence; indicating more or less definitely a size of book, whose sheets are so folded;
usually written 18mo or 18°, and called eighteenmo.
(Oc`to*den"tate) a. [Octo- + dentate.] Having eight teeth.
(Oc"to*dont) a. [Octo- + Gr. .] (Zoöl.) Of or pertaining to the Octodontidæ, a family of rodents
which includes the coypu, and many other South American species.
(Oc`to*ed"ric*al) a. See Octahedral. [Obs.] Sir T. Browne.
(Oc"to*fid) a. [Octo- + root of L. findere to split: cf.F. octofide.] (Bot.) Cleft or separated into
eight segments, as a calyx.
(Oc*tog"a*my) n. [Octo- + Gr. marriage.] A marrying eight times. [R.] Chaucer.
(Oc`to*ge*na"ri*an) n. A person eighty years, or more, of age.
(Oc*tog"e*na*ry) a. [L. octogenarrus, from octogeni eighty each, octoginta eighty, fr.
octo eight. See Eight, Eighty.] Of eighty years of age. "Being then octogenary." Aubrey.
(Oc"to*gild) n. [Octo- + AS. gild payment.] (Anglo-Saxon Law) A pecuniary compensation for
an injury, of eight times the value of the thing.
(Oc*tog"o*nal) a. See Octagonal. [Obs.]
(||Oc`to*gyn"i*a) n. pl. [NL., from Gr. eight + a woman, female.] (Bot.) A Linnaean order of
plants having eight pistils.
(Oc`to*gyn"i*an Oc*tog"y*nous) a. (Bot.) Having eight pistils; octagynous.