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dodecahedron

noun
🔊/ˌdəʊdekəˈhiːdrən/
🔊/ˌdəʊdekəˈhiːdrən/
(geometry几何)
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  1. a solid shape with twelve flat sides 十二面体compare dodecagon
    Word Originlate 16th cent.: from Greek dōdekaedron, neuter (used as a noun) of dōdekaedros ‘twelve-faced’.