tephra: Meaning and Definition of

teph•ra

Pronunciation: (tef'ru), [key]
— n. (used with a pl. v.)
  1. clastic volcanic material, as scoria, dust, etc., ejected during an eruption.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
tephillin tephrite
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