IPA: /mæɡˈmætɪk/
KK: /mægˈmætɪk/
Relating to or formed from magma, which is molten rock beneath the Earth's surface.
The magmatic activity in the region has led to the formation of several volcanoes.
Magmatic → It is formed from "magma" (from Latin *magma*, meaning thick unctuous matter) and the suffix "-tic" (meaning pertaining to). The word "magmatic" refers to something that is related to or derived from magma.
Think of 'magma' as the thick material from which volcanic rocks form, and remember that 'magmatic' means something related to that molten rock.