geomagnetism /jē-ō-magˈnə-ti-zm/

1. The magnetism of the earth, earth's magnetic field
2. The study of this

geomagnetˈic adjective

geomagˈnetist noun

• as though
• Asti
• astichous
• a stiff upper lip
• astigmatic
• astigmatically
• astigmatism
• astigmatisms
• astigmia
• astilbe
• astilbes
• astir
• a stitch in time
• a stitch in time saves nine
• ASTM
• as to
• astomatous
• astomous
• astone
• astonied
• astonish
• astonished
• astonishes
• astonishing
• astonishingly