Lieutenant general :  n : a general officer ranking above a major general and below a full general

Lieutenant \Lieu*ten"ant\ (l[-u]*t[e^]n"ant), n. [F., fr. lieu place + tenant holding, p. pr. of tenir to hold, L. tenere. See Lieu, and Tenant, and cf. Locum Tenens.] 1. An officer who supplies the place of a superior in his absence; a representative of, or substitute for, another in the performance of any duty. The lawful magistrate, who is the vicegerent or lieutenant of God. --Abp. Bramhall. 2. (a) A commissioned officer in the army, next below a captain. (b) A commissioned officer in the British navy, in rank next below a commander. (c) A commissioned officer in the United States navy, in rank next below a lieutenant commander. Note: Lieutenant is often used, either adjectively or in hyphened compounds, to denote an officer, in rank next below another, especially when the duties of the higher officer may devolve upon the lower one; as, lieutenant general, or lieutenant-general; lieutenant colonel, or lieutenant-colonel; lieutenant governor, etc. Deputy lieutenant, the title of any one of the deputies or assistants of the lord lieutenant of a county. [Eng.] Lieutenant colonel, an army officer next in rank above major, and below colonel. Lieutenant commander, an officer in the United States navy, in rank next below a commander and next above a lieutenant. Lieutenant general. See in Vocabulary. Lieutenant governor. (a) An officer of a State, being next in rank to the governor, and, in case of the death or resignation of the latter, himself acting as governor. [U. S.] (b) A deputy governor acting as the chief civil officer of one of several colonies under a governor general. [Eng.]

Lieutenant general : \Lieu*ten"ant gen"er*al\ (j[e^]n"[~e]r*al). An army officer in rank next below a general and next above a major general. Note: In the United States, before the civil war, this rank had been conferred only on George Washington and (in brevet) on Winfield Scott. In 1864 it was revived by Congress and conferred on Ulysses S. Grant, and subsequently, by promotion, on William T. Sherman and Philip H. Sheridan, each of whom was advanced to the rank of general of the army. When Sheridan was made general (in 1888) the rank of lieutenant general was suffered to lapse. See General.