plural -s
: a rare basaltic dike rock of the composition of a melilite-basalt having phenocrysts of biotite, augite, and olivine in a groundmass of melilite and augite

Word History


German alnöit, from Alnö, island of Sweden, its locality + German -it -ite

First Known Use

1888, in the meaning defined above

Time Traveler
The first known use of alnoite was in 1888

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Dictionary Entries Near alnoite

Cite this Entry

“Alnoite.” Dictionary, Merriam-Webster, Accessed 18 May. 2024.

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