adjective

an active volcano is likely to erupt (=explode and pour out fire) at any time. When a volcano no longer does this, it is extinct.

noun

the round hole at the top of a volcano

adjective

something that is dormant is not active or developing now, but it may become active or develop in the future

verb

if a volcano erupts, it explodes inside and flames, rocks, and lava come out of the top

adjective

an extinct volcano no longer erupts

adjective

an inactive volcano is not dangerous because it can no longer erupt

noun

rock in the form of hot liquid

noun

the solid rock that forms when liquid lava becomes cold

noun

a hole in the Earth’s surface through which lava or gas comes out

adjective

coming from or connected with a volcano

noun

a mountain that forces hot gas, rocks, ash, and lava (=melted rock) into the air through a hole at the top. Some volcanoes are not immediately dangerous because they are not active and have become dormant. Others will never be dangerous again because they are completely extinct

noun

noun