Coordinate  (also co-ordinate) —v. (-ting) 1 cause (parts, movements, etc.) To function together efficiently. 2 work or act together effectively. —adj. Equal in rank or importance. —n. 1 math. Each of a system of values used to fix the position of a point, line, or plane. 2 (in pl.) Matching items of clothing.  coordination n. Coordinator n. [latin ordino: related to *order]