What does Absolute coordinates mean?

Absolute coordinates meaning in Computer Science Dictionary

a complete coordinate describes a Cartesian System that makes use of X, Y, and sometimes a Z-axis to determine a place some length from a typical beginning. Like, the picture reveals an origin point of '0,0' therefore the absolute coordinate from that point is '8,7' which makes it 8 over the X-axis and 7 along the Y-axis.