Defn: A portion of the Old Testament prepared by Origen in the 3d century, containing the Hebrew text and seven Greek versions of it, arranged in eight parallel columns.

OCTAROON
Oc`ta*roon", n.

Defn: See Octoroon.

OCTASTYLE
Oc"ta*style, a.

Defn: See Octostyle.

OCTATEUCH
Oc"ta*teuch, n. Etym: [L. octateuchus, Gr.

Defn: A collection of eight books; especially, the first eight books of the Old Testament. [R.]

OCTAVALENT
Oc*tav"a*lent, a. Etym: [Octa- + L. valens, p. pr. See Valence.]
(Chem.)

Defn: Having a valence of eight; capable of being combined with, exchanged for, or compared with, eight atoms of hydrogen; — said of certain atoms or radicals.

OCTAVE Oc"tave, n. Etym: [F., fr. L. octava an eighth, fr. octavus eighth, fr. octo eight. See Eight, and cf. Octavo, Utas.]