one of the five regular polyhedrons: tetrahedron, octahedron, hexahedron, icosahedron, or dodecahedron.
any of the five possible regular polyhedra: cube, tetrahedron, octahedron, icosahedron, and dodecahedron Also called (esp formerly) Platonic body
noun, Astronomy. 1. a period of about 26,000 years, equal to the time required for a complete revolution of the equinoxes.
[pleyt-n-iz-uh m] /ˈpleɪt nˌɪz əm/ noun 1. the philosophy or doctrines of Plato or his followers. 2. a Platonic doctrine or saying. 3. the belief that physical objects are impermanent representations of unchanging Ideas, and that the Ideas alone give true knowledge as they are known by the mind. 4. (sometimes lowercase) the doctrine or […]
[pleyt-n-ahyz] /ˈpleɪt nˌaɪz/ verb (used without object), Platonized, Platonizing. 1. to follow or adopt the doctrines of Plato. 2. to think or reason in the manner of Plato. verb (used with object), Platonized, Platonizing. 3. to give a Platonic character to. 4. to explain in accordance with Platonic principles.
noun, U.S. Army. 1. the senior noncommissioned officer in a platoon, equivalent to sergeant first class.