lieutenant commander(redirected from Lt. Commander)
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1. A commissioned rank in the US Navy or Coast Guard that is above lieutenant and below commander.
2. One who holds this rank.
(Nautical Terms) an officer holding commissioned rank in certain navies, immediately junior to a commander
a commissioned officer in the U.S. Navy or Coast Guard ranking above a lieutenant.
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|Noun||1.||lieutenant commander - a commissioned officer in the Navy ranking above a lieutenant and below a commander|
armed forces, armed services, military, military machine, war machine - the military forces of a nation; "their military is the largest in the region"; "the military machine is the same one we faced in 1991 but now it is weaker"
commissioned naval officer - a commissioned officer in the navy