noun
extinct volcano
A volcano that is not expected to erupt again. In geology, the term is sometimes replaced by more precise classifications, but it remains common in everyday use.
富士山は死火山ではなく休火山です。
Mt. Fuji is not an extinct volcano but a dormant one.
この島には死火山がいくつかある。
There are several extinct volcanoes on this island.
A dormant volcano that is not currently erupting but could become active in the future.
Compound of 死 (し, 'death') + 火山 (かざん, 'volcano'), literally 'dead volcano'.