[tef-ruh] 
) | clastic volcanic material, as scoria, dust, etc., ejected during an eruption. |
| teph·ra (těf'rə) n. Solid matter that is ejected into the air by an erupting volcano. [Greek tephrā, ash; see dhegwh- in Indo-European roots.] |
| tephra (těf'rə) Pronunciation Key
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. |