noun
volcanic product; volcanic ejecta
Technical term in geology and volcanology for solid, liquid, or gaseous material ejected from a volcano.
火山噴出物には火山灰や溶岩が含まれる。
Volcanic products include volcanic ash and lava.
Compound of 火山 (volcano) + 噴出 (eruption, ejection) + 物 (thing, material).