صفت ( adjective )
•  (1) تعریف: of, pertaining to, or having equal angles; equiangular.
•  (2) تعریف: connecting or designating points on the earth's surface with equal declination of the earth's magnetic field.
اسم ( noun )
• : تعریف: an imaginary line connecting all points on the earth's surface with equal magnetic declination.