Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The
angle , at any point on the surface of the Earth, betweengrid north andmagnetic north.
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
Contraction of grid (magnetic) variation.
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tankhughes commented on the word grivation
Related: isogriv
March 14, 2023