noun
complex volcano; compound volcano
A volcano formed by multiple vents or overlapping cones, often with a complex structure. Technical term used in geology and volcanology.
富士山は複合火山の一種と見なされることがある。
Mount Fuji is sometimes considered a type of complex volcano.
成層火山 (stratovolcano) is a specific type of composite volcano built from alternating layers of lava and ash, while 複合火山 is a broader term for any volcano with a complex structure from multiple vents or cones.
Compound of 複合 (fukugō, 'compound, complex') and 火山 (kazan, 'volcano'). The term is a direct translation of the English 'complex volcano' or 'compound volcano'.