coordinate axis

English Thesaurus

1. one of the fixed reference lines of a coordinate system (noun.cognition)

hypernym	:	axis,
definition	:	a straight line through a body or figure that satisfies certain conditions (noun.cognition)

hyponym	:	x-axis,
definition	:	the horizontal axis in a plane coordinate system (noun.cognition)

hyponym	:	y-axis,
definition	:	the vertical axis in a plane coordinate system (noun.cognition)

hyponym	:	z-axis,
definition	:	the third axis in a 3-dimensional coordinate system (noun.cognition)

part meronym	:	coordinate system, frame of reference, reference frame, reference system,
definition	:	a system that uses coordinates to establish position (noun.cognition)