Equal in rank or order; not subordinate.

To make coördinate; to put in the same order or rank; as, to coördinate ideas in classification.

To give a common action, movement, or condition to; to regulate and combine so as to produce harmonious action; to adjust; to harmonize; as, to coördinate muscular movements.

A thing of the same rank with another thing; one two or more persons or things of equal rank, authority, or importance.

Lines, or other elements of reference, by means of which the position of any point, as of a curve, is defined with respect to certain fixed lines, or planes, called coördinate axes and coördinate planes. See Abscissa.