A prefix meaning eight. See Octo-. [ 1913 Webster ]
n. [ Gr. &unr_; with eight strings;
n. [ Gr. &unr_;, &unr_;, the number eight. ]
a. See Octahedral. [ 1913 Webster ]
‖n. [ NL., fr. Gr. &unr_;, neut. of &unr_; of the eighth day. ] (Eccl.) A fast of eight days before a great festival. Shipley. [ 1913 Webster ]
n. [ Gr. &unr_; eight-cornered;
Regular octagon,
a. Having eight sides and eight angles. [ 1913 Webster ]
a. [ Octa- + Gr.
a. [ See octahedron. ] Having eight faces or sides; of, pertaining to, or formed in, octahedrons;
octahedral borax (Chem.),
Octahedral iron ore (Min.),