The state of being volcanic; volcanic activity or phenomena.

ज्वालामुखीयता

English Usage: The volcanity of the region has drawn geologists from around the world.

Hindi Usage: इस क्षेत्र की ज्वालामुखीयता ने दुनिया भर के भूवैज्ञानिकों को आकर्षित किया।