火か山ざん涙るい

noun

Pele's tears

A geological term for small, tear-shaped droplets of volcanic glass formed during eruptions. Often used in volcanology contexts.

See also: ペレーの涙

• 火か山ざん涙るいは、噴ふん火かの際さいに溶よう岩がんが急きゅう冷れいしてできるガラス質しつ