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

Derived forms: isogonal lines

Type of: line

• bicycle rack
• bicycle seat
• bicycle traffic
• bicycle wheel
• bicycle-built-for-two
• bicycler
• bicyclic
• bicycling
• bicyclist
• bicylindrical
• bid
• bid price
• Bida
• biddable
• bidder
• bidding
• bidding contest
• biddy
• bide
• Bidens
• Bidens bipinnata
• Bidens connata
• Bidens coronata
• Bidens trichosperma
• Bidens tripartita