A military grade that is junior to the grade the adjective modifies: lieutenant colonel, lieutenant general, lieutenant commander.

(military, US) In the US Army, Air Force and Marines, holding the rank above Second Lieutenant and below Captain. Both ranks may be referred to as "Lieutenant" or as the complete forms of the ranks.

plural of lieutenant

Alternative letter-case form of lieutenant (when used as a title before a name)

plural of Lieutenant

The role, position, or domain of a lieutenant.

plural of lieutenancy

An army officer in many countries, ranking below a colonel and above a major. Often the commander of a battalion or the executive officer of a regiment.

A naval officer whose rank is higher than a lieutenant and below that of a commander.

(UK) A commissioned officer of the Royal Navy ranking above a midshipman and below a lieutenant.