Navig.
the angle, at any point on the surface of the earth, between the magnetic and true meridians passing through that point. Also called grivation .
Navig.
the angle, at any point on the surface of the earth, between the magnetic and true meridians passing through that point. Also called grivation .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012