Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. An igneous rock consisting chiefly of pyroxene and nepheline.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a dark, finely crystalline rock of volcanic origin, being a mixture of nepheline and pyroxene

from The Century Dictionary and Cyclopedia

  • n. The name given by Rosenbusch to what had previously been generally designated us “nephelin-dolerite.” The difference between this rock and nephelin-basalt is exceedingly slight. See nephelin-basalt.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. an igneous rock consisting of nepheline and pyroxene

Etymologies

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Examples

  • The predominant rock types on Shira and Mawenzi are trachybasalts; the later lava flows on Kibo show a gradual change from trachyandesite to nephelinite.

    Kilimanjaro National Park, Tanzania

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