tephra

[复]n.[用作单或复][地]火山灰

发音

UK /ˈtɛ.fɹə/
US /ˈtɛ.fɹə/

词形变化

tephras 复数 tephras

释义与例句

n.
  1. 1.

    The solid material thrown into the air by a volcanic eruption that settles on the surrounding areas.

    可数 不可数 地质

词源

From the Ancient Greek τέφρα (téphra, “ash”).

来源：wiktionary