The Chinese word for volcano is
火山

huǒ shān

Chinese Definition

volcano
1. 名词. 火山
Components
火
1. fire; flame
可以跟你借一個火嗎？ - Can I borrow a light?
2. fire (as a disaster); inferno
3. red; fiery; bright; brilliant
4. to burn down
5. light; torch
6. (dialectal) light; lamp
7. anger; rage; wrath
8. to become enraged
9. angry; furious
10. (TCM) internal heat
11. firearm; ammunition; weapon
12. war; warfare
13. thriving; brisk
14. urgent; pressing
15. (neologism) to become popular; to go viral
16. (neologism) to be popular; to be viral
17. (Cantonese) watt (unit of power)
※(Definitely, "火" here is a unit of brightness (luminous intensity). However, the brightness of a luminous device is measured in watts in life because of luminous intensity's dependence on powe
20 火嘅燈膽 - 20-watt lightbulb
18. Short for 火星, Mars
19. (Cantonese) roasted
Synonyms: 烤, 燒
火鴨 - roasted duck
山
1. mountain; hill
登山 - to climb a mountain
2. hill-shaped object
冰山 - iceberg
3. bundled straw in which silkworms spin cocoons
4. gable
5. (Cantonese, Liuzhou Mandarin, Pinghua) tomb; grave
6. . Shan