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

• colour reversal
• colours
• colour scheme
• colour schemes
• colour screen
• colour screens
• colour-sergeant
• colour subcarrier
• colour-sup
• colour-supp
• colour supplement
• colour supplements
• colour temperature
• colour therapy
• colour threshold
• colour up
• colourwash
• colourwashed
• colourwashes
• colourwashing
• colourway
• colourways
• colour wheel
• colour wheels
• coloury