The Central Meridian is the meridian that passes through the center of a projection. Distortion is minimized along the central meridian, thus, it is important to select a central meridian that runs through the center of the area of interest on a map.
Meridian passing through the center of a projection, often a straight line about which the projection is symmetrical
The north-south meridian of the Sun that passes through the centre of the disc as viewed from the Earth.
The vertical meridian of a map projection around which the map is centered
for conic projections, the central meridian is the single line of longitude that is truly vertical on the map. It is usually in the middle of the map.
A central meridian is a meridian that passes through the center of a projection. The central meridian is often a straight line that is an axis of symmetry of the projection.
A line running north and south at the center of a map (or other design), which has been divided into squares so the map can be put into other dimensions. All the points along the line have the same longitude.
