[ tef-ruh ]
/ ˈtɛf rə /
noun (used with a plural verb)
clastic volcanic material, as scoria, dust, etc., ejected during an eruption.
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Origin of tephra
First recorded in 1960–65, tephra is from the Greek word téphra (singular) ashes
Words nearby tephra
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for tephra
/ (ˈtɛfrə) /
mainly US solid matter ejected during a volcanic eruption
Word Origin for tephra
C20: Greek, literally: ashes
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for tephra
[ tĕf′rə ]
Solid matter, such as ash, dust, and cinders, that is ejected into the air by an erupting volcano. Tephra is a general term for all pyroclastic materials ejected from a volcano.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.