| Answer | Crossword Clue |
|---|---|
| isogone | imaginary line, or one drawn on a map, connecting all points of equal magnetic declination |
| isogonic | imaginary line, or one drawn on a map, connecting all points of equal magnetic declination |
| isogonal | imaginary line, or one drawn on a map, connecting all points of equal magnetic declination |
| isogones | imaginary line, or one drawn on a map, connecting all points of equal magnetic declination |
| isobaths | imaginary line or one drawn on a map connecting all points of equal depth below the surface of a body of water |
| isobath | imaginary line or one drawn on a map connecting all points of equal depth below the surface of a body of water |
