† co-ˈordinacyObs. [f. co-ordinate: see -acy.] Co-ordinate condition; co-ordination. 1683Brit.Spec.Pref. 7, I assert the Soveraignty of our Lord the King..in opposition to the pernicious Doctrine of Co-ordinacy.1753Scots Mag. Aug. 371/1 They..provided for their own co-ordinacy.