Emily Dickinson Lexicon
Definition for PER-I-DO-DEC-A-HE'DRAL
PER-I-DO-DEC-A-HE'DRAL, a. [Gr. περι, and dodecahedral.]
Designating a crystal whose primitive form is a four-sided prism, and its secondary form is converted into a prism of twelve sides. – Cleaveland.
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