Origin of tephrite; from Classical Greek tephra, ashes ; from Indo-European base an unverified form dhegwh-, to burn (from source fever) + -ite
(countable and uncountable, plural tephrites)
- (geology) An igneous rock consisting essentially of plagioclase and either leucite or nephelite, or both.
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.