'x-coordinate' originates from the combination of 'x' representing the horizontal axis in a Cartesian coordinate system and 'coordinate,' which comes from Latin 'coordinare,' meaning 'to arrange in order.'

'Coordinate' evolved from the Latin 'coordinare' through Old French 'coordonner,' eventually becoming the modern English word 'coordinate.'

Initially, 'coordinate' meant 'to arrange in order,' but in mathematics, it evolved to mean a value that defines a position in a coordinate system.