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octaedrum

octaëdrum [ὀκτάεδρον] , eight-faced solid, octahedron. secunda habet superficies octo triangulares, et ideo vocatur ~um, nam octo purum est Grecum, non Latinum Bacon Maj. I 160; est octocedron figura octo basium triangularium Id. Tert. 139; omne namque corpus hujusmodi est pyramis, cubus, octoedron, duodecaedron, icosaedron, vel sphera Bradw. CD 120C.

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