火山学 huǒshānxué volcanology Definitions Defs Origin Strokes Stroke Words Sentences Sents 火山 huǒshān noun volcano a mountain or hill through which lava, rock fragments, hot vapor, and gas are being or have been erupted from the earth's crust学 學 xué nounaffix branch of learning (bound form) a subject or branch of study; often used as a suffix for -logy, -ics, or -science
