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单词 pentadodecahedron
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pentadodecahedron
pentadodecahedron n.
Brit. /pɛntəˌdəʊdɛkəˈhiːdrən/
,
U.S. /ˌpɛn(t)əˌdoʊˌdɛkəˈhidrən/
Geometry rare a regular dodecahedron; a dodecahedron having twelve pentagonal faces.
ΘΚΠ
the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > contained by pentagons
pentadodecahedron1869
pentagon-dodecahedron1895
pentagonohedron1895
1869 J. Phillips Vesuvius x. 273 These five types of form, all regular,..and all parts of one equi-axed system, may be named and employed to designate crystals,..the cube, octahedron,..penta-dodecahedron.
1975 R. B. Fuller & E. J. Applewhite Synergetics 318 Necklace cubes, rhombic dodecahedra, pentadodecahedra, vector equilibria, and tetrakaidecahedra are all unstable.
extracted from penta-comb. form
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