/ Dictionary / Index P Platonic solid: Meaning and Definition of Find definitions for: Platon'ic sol'id Pronunciation: [key] — Geom. Geom. one of the five regular polyhedrons: tetrahedron, octahedron, hexahedron, icosahedron, or dodecahedron. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Platonic love Platonic year Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language