from The American Heritage® Dictionary of the English Language, 5th Edition.

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

from The Century Dictionary.

  • noun 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 Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun geology a dark, finely crystalline rock of volcanic origin, being a mixture of nepheline and pyroxene

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

  • noun an igneous rock consisting of nepheline and pyroxene


Sorry, no etymologies found.


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  • 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 2009


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