plural -s
: a form consisting of a double 12-sided pyramid : the dihexagonal dipyramid

Word History


International Scientific Vocabulary beryll- (probably from Latin beryllus) + -oid; from the frequent occurrence of beryl crystals in this form

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Dictionary Entries Near berylloid

Cite this Entry

“Berylloid.” Dictionary, Merriam-Webster, Accessed 2 Jun. 2023.

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