trigonal
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.tri·go·nal
adjective \trī-ˈgō-nəl\Definition of TRIGONAL
: of, relating to, or being the division of the hexagonal crystal system or the forms belonging to it characterized by a vertical axis of threefold symmetry
— tri·go·nal·ly \-nəl-ē\ adverb
First Known Use of TRIGONAL
1878
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