DECAHEDRON

decahedron. Decahedron, n. a figure of ten sides

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Dec′a‐he″dron (?), n.; pl. E. Decahedrons (#), L. Decahedra (#). [[Pref. deca- + Gr. ἔδρα a seat, a base, fr. ἔζεσθαι to sit: cf. F. décaèdre.]] (Geom.) A solid figure or body inclosed by ten plane surfaces. [Written also, less correctly, decaedron.]