Platonic solid

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Platonic solid

(Mathematics) any of the five possible regular polyhedra: cube, tetrahedron, octahedron, icosahedron, and dodecahedron. Also called (esp formerly): Platonic body

[C17: named after Plato¹, who was the first to list them]

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

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Noun

Platonic solid - any one of five solids whose faces are congruent regular polygons and whose polyhedral angles are all congruent

ideal solid, Platonic body, regular convex polyhedron, regular convex solid, regular polyhedron

polyhedron - a solid figure bounded by plane polygons or faces

regular tetrahedron - a tetrahedron with four equilateral triangular faces

cube, regular hexahedron - a hexahedron with six equal squares as faces

regular dodecahedron - a dodecahedron with twelve regular pentagons as faces

regular octahedron - an octahedron with eight equilateral triangles as faces

regular icosahedron - an icosahedron with twenty equilateral triangles as faces

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References in classic literature ?

The Sphere would willingly have continued his lessons by indoctrinating me in the conformation of all regular Solids, Cylinders, Cones, Pyramids, Pentahedrons, Hexahedrons, Dodecahedrons, and Spheres: but I ventured to interrupt him.

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The opening stages were a well-fought affair with both sides regularly finishing sets and being denied any chance for creativity by regular solid defensive work.

Wolves just too strong for Giants; THE VERDICT: GIANTS 20 WARRINGTON 32 WOOLFORD'S MEN STILL LOOKING FOR FIRST WIN OF SEASON AS LEADERS WARRINGTON RUN IN SIX TRIES

The said ordinance also bans "the sale, wholesale or retail, of cosmetics that have not been authorized by the FDA and/or have not complied with the labeling requirements," as well as "the open dumping, open burning and/or disposal of banned, recalled and/or confiscated mercury-containing cosmetics along with regular solid waste."

EcoWaste Coalition warns against products with mercury

Caption: FIGURE 1: Operative specimen: left orchiectomy, with a 7-centimeter regular solid mass of the epididymis caput.

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In fact have a look at the Burnley team that easily beat Everton a few weeks ago - all modestly priced but all regular solid seven out of 10 players who can be moulded into an effective team.

Sorry about Unsy but Dyche ticks most of the boxes

Instead of using a radiator, we will be using a regular solid thermal bag (the ones you use when you go to a picnic to keep your beer cold) and in that we will put our thermal agent, which is a mix of water, ice and antifreeze.

Intel Core i7-7740K Shatters Overclocking Records, Hits 7.5GHz Thanks to Liquid Helium

These drives look like regular solid state drives but must run alongside a separate hard drive, and they offer faster PC boot-up times.

Ultrabooks boost popularity of cache solid state drives

Arizona DEQ reported an investigation by its Solid Waste Inspection and Compliance Unit in June 2009 allegedly determined that the clinic had disposed of untreated biohazardous medical waste syringes contaminated with blood in regular solid waste containers that were dumped in the Gila County landfill between 1999 and 2009.

Arizona DEQ inks pact with Star Valley Veterinary Clinic

Each regular solid can be uniquely determined with the so-called Schlafli symbol.