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

• poison mercury
• poison milkweed
• poison oak
• poison parsley
• poison pea
• poison pill
• poison sumac
• poisonberry
• poisoner
• poisoning
• poisonous
• poisonous nightshade
• poisonous parasol
• poisonous plant
• poisonous substance
• poisonously
• Poisson distribution
• Poitier
• Poitiers
• Poitou
• Poitou-Charentes
• poitrine d'agneau
• Poivrade
• poke
• poke at