Definition of tephra in English:

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Pronunciation: /ˈtefrə/


Rock fragments and particles ejected by a volcanic eruption.
Example sentences
  • Any such lateral motions could contribute to the absence or thinness of distal marine tephra layers on submarine high points or steep slopes.
  • Two types of tephra fallout deposits have been observed.
  • Some reports are stating that that tephra rim could collapse later this year.


1940s: from Greek, literally 'ash, ashes'.

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