eruptive has definitions from the field of geology
1
[ adjective ] (geology) igneous rock that has solidified beneath the earth's surface; granite or diorite or gabbro

Synonyms

plutonic irruptive

Related terms

intrusive

2
[ adjective ] (geology) igneous rock produced by eruption and solidified on or near the earth's surface; rhyolite or andesite or basalt

Synonyms

volcanic

Examples

"volcanic rock includes the volcanic glass obsidian"

Related terms

extrusive

3
[ adjective ] erupting or tending to erupt

Synonyms

erupting

Examples

"a geyser is an intermittently eruptive hot spring" "people fled from the erupting volcano"

Related terms

active

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