複ふく合ごう火か山ざんふくごうかざんMeanings1nouncomplex volcano; compound volcanoA volcano formed by multiple vents or overlapping cones, often with a complex structure. Technical term used in geology and volcanology.富ふ士じ山さんは複ふく合ごう火か山ざんの一いっ種しゅと見みなされることが