(redirected from nephelinitic)


 (nĕf′ə-lēn′, -lĭn) also neph·e·lite (-līt′)
A mineral of sodium-aluminum or potassium-aluminum silicate, occurring worldwide in igneous rocks and used in the manufacture of ceramics and enamels.

[From Greek nephelē, cloud (because its fragments become cloudy when placed in nitric acid); see nebh- in Indo-European roots.]

neph′e·lin′ic (-lĭn′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˌnɛfɪˈlɪnɪk) or


(Geological Science) geology containing or resembling nepheline, pertaining to nepheline
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
The Napak deposits comprise predominantly sub-aerial volcanic ashes of carbonatitic and nephelinitic composition and palaeosols derived from these ashes.
Piccirillo et al., "Tertiary nephelinitic magmatism in eastern Paraguay: petrology, Sr- Nd isotopes and genetic relationships with associated spinelperidotite xenoliths," European Journal of Mineralogy, vol.