A commissioned military officer is known as a lieutenant. He can also be an officer in the police force, paramilitary and the fire service. If one goes by the exact designation, he is a person who holds a commissioned rank in the US Navy or Coast Guard below the ranks of the lieutenant commander and above the lieutenant junior.
The word "lieutenant" comes from the French word by the same name, with the word "lieu," implying "place" and "tenant" implying "holding ('a position'). The representative of the British king in Ireland and other counties of the UK is referred to as the lieutenant. The word is pronounced as "lootenant" in US English and as "lef-tenant" in British English, with respect to the English Army. A deputy or an assistant who has the power to act as a supervisor in the latter's behalf can act as a "lieutenant."
The word "lieutenant" comes from the French word by the same name, with the word "lieu," implying "place" and "tenant" implying "holding ('a position'). The representative of the British king in Ireland and other counties of the UK is referred to as the lieutenant. The word is pronounced as "lootenant" in US English and as "lef-tenant" in British English, with respect to the English Army. A deputy or an assistant who has the power to act as a supervisor in the latter's behalf can act as a "lieutenant."