1. An imaginary line connecting points on the Earth's surface where the magnetic declination is the same
   - isogonic line, isogonal line

Derived forms: isogones

Type of: line

• adducting
• adduction
• adductive
• adductor
• adductor muscle
• ade
• Adelaide
• Adelges
• Adelges abietis
• Adelges piceae
• adelgid
• Adelgidae
• Adelie
• Adelie Coast
• Adelie Land
• Adelie penguin
• Adeline Virginia Stephen Woolf
• ademption
• Aden
• Aden-Abyan Islamic Army
• Adenanthera
• Adenanthera pavonina
• Adenauer
• adenine
• adenitis