eudidymite

noun

eu·​did·​y·​mite

yüˈdidəˌmīt

plural -s

: a mineral NaBeSi₃O₇(OH) consisting of a white glassy sodium beryllium silicate

Word History

Etymology

Norwegian eudidymit, from eu- + Greek didymos twin + Norwegian -it -ite; from its occurrence in twin crystals

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