Question

How do you define meridian

Answer 1

Meridian: the (imaginary) line between the south and North Pole which divides the earth in half

Answer 2

Meridian are imaginary lines that defines the position of a place

Explanation:

In mathematics a meridian of a surface of revolution is the intersection of the surface with a plane. Generally Meridians are used to help you describe the position of a place. In geographical terms a meridian is an imaginary line from the North Pole to the South Pole and Meridians are drawn on maps to help the reader to describe the position of a place.