tephra

[ tef-ruh ]
/ ˈtɛf rə /

noun (used with a plural verb)

clastic volcanic material, as scoria, dust, etc., ejected during an eruption.

Origin of tephra

First recorded in 1960–65, tephra is from the Greek word téphra (singular) ashes

British Dictionary definitions for tephra

tephra
/ (ˈtɛfrə) /

noun

mainly US solid matter ejected during a volcanic eruption

Word Origin for tephra

C20: Greek, literally: ashes

Scientific definitions for tephra

tephra
[ tĕfrə ]

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.