| Answer | Crossword Clue |
|---|---|
| grivation | grid variation |
| grivations | GRIVATION, grid variation |
| isogriv | a map line indicating equal grid variation |
| isogrivs | ISOGRIV, a map line indicating equal grid variation |
| isogriv | line on a map or chart connecting points of uniform grid variation |
| isogrivs | line on a map or chart connecting points of uniform grid variation |
