con·sol·i·date / kənˈsäləˌdāt/ • v. 1. [tr.] make (something) physically stronger or more solid: consolidate the outside walls. ∎  reinforce or strengthen (one's position or power): the company consolidated its position in the international market. ∎  combine (a number of things) into a single more effective or coherent whole: all manufacturing activities have been consolidated in new premises. ∎  combine (a number of financial accounts or funds) into a single overall account or set of accounts. ∎  combine (two or more legal actions involving similar questions) into one for action by a court.2. [intr.] become stronger or more solid.DERIVATIVES: con·sol·i·da·tion / -ˌsäləˈdāshən/ n.con·sol·i·da·tor / -ˌdātər/ n.

consolidate XVI. f. pp. stem of L. consolidāre, f. CON- (intensive) + solidāre, f. solidus SOLID; see -ATE 3.
So consolidation XV. — late L.