Smart answer:

Your search for What is magnetic declination returned the following results:

The angle between the compass pointing direction and True North

The angle between the compass pointing direction and True North is called magnetic declination.

Source:

the angle between true north and the horizontal trace of the magnetic field

Knowing the magnetic declination (the angle between true north and the horizontal trace of the magnetic field) for your location allows you to correct your compass for the magnetic field in your area.

the direction and amount of variation between the Magnetic Pole and True North

Magnetic declination is the direction and amount of variation between the Magnetic Pole and True North.

Source:

The angle between the magnetic and the true meridian

The angle between the magnetic and the true meridian is the magnetic declination, which is relevant for navigating with a compass.

Source:

Magnetic variation (also known as magnetic declination)

Magnetic variation (also known as magnetic declination) is different depending on the geographic position on the globe.

Source:

the difference between true north ('top' of the earth's axis) and magnetic north () the direction a compass needle points

(For those of us who didn't major in geography, magnetic declination is the difference between true north ('top' of the earth's axis) and magnetic north (the direction a compass needle points).

Source:

The difference between the true direction and magnetic direction

The difference between the true direction and magnetic direction is called magnetic declination.

Source:

the difference between magnetic and geographic north

Magnetic declination is the difference between magnetic and geographic north.

to the difference between true north and compass north

Magnetic Declination, or as the year is more commonly known Magnetic Variance, refers to the difference between true north and compass north.

the difference, , between where a compass points and true north given in degrees

Magnetic declination is the difference, given in degrees, between where a compass points and true north.

Source:

The angle between magnetic meridian and geographical meridian at a place

The angle between magnetic meridian and geographical meridian at a place is called magnetic declination at that place.