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tetrahedron
noun
🔊
/ˌtetrəˈhiːdrən/
🔊
/ˌtetrəˈhiːdrən/
(
geometry
几何
)
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a solid shape with four flat sides that are
triangles
四面体
Topics
Colours and Shapes
c2
Word Origin
late 16th cent.: from late Greek
tetraedron
, neuter (used as a noun) of
tetraedros
‘four-sided’.
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Word Originlate 16th cent.: from late Greek tetraedron, neuter (used as a noun) of tetraedros ‘four-sided’.
