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

• cockneyism
• cockpit
• cockroach
• cockscomb
• cocksfoot
• cockspur
• cockspur hawthorn
• cockspur thorn
• cocksucker
• cocksure
• cocksureness
• cocktail
• cocktail dress
• cocktail lounge
• cocktail party
• cocktail sauce
• cocktail shaker
• cocktail stick
• cocktail table
• cockup
• cocky
• cocky-leeky
• coco
• coco de macao
• coco palm