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tetrahedral

[te-truh-hee-druh l] /ˌtɛ trəˈhi drəl/
adjective
1.
pertaining to or having the form of a tetrahedron.
2.
having four lateral planes in addition to the top and bottom.
Origin
1785-1795
1785-95; tetrahedr(on) + -al1
Related forms
tetrahedrally, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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