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A lieutenant (abbreviated Lt., LT, LTA, Lieut. and LEUT.) is a junior commissioned officer in many nations' armed forces, fire service, or law enforcement. The meaning of lieutenant differs in different military formations (see comparative military ranks), but is often subdivided into senior (first lieutenant) and junior (second lieutenant) ranks. In navies it is often equivalent to the army rank of captain; it may also indicate a particular post rather than a rank. The rank is also used in fire services, emergency medical services, security services and police forces. Lieutenant may also appear as part of a title used in various other organizations with a codified command structure. It often designates someone who is "second-in-command," and as such, may precede the name of the rank directly above it. For example, a "lieutenant master" is likely to be second-in-command to the "master" in an organization using both ranks. Political uses include lieutenant governor in various governments, and Quebec lieutenant in Canadian politics. In the United Kingdom, a lord lieutenant is the sovereign's representative in a county or lieutenancy area, while a deputy lieutenant is one of the lord lieutenant's deputies. ==Etymology== The word ''lieutenant'' derives from French; the ''lieu'' meaning "place" as in a position (cf. in lieu of); and ''tenant'' meaning "holding" as in "holding a position"; thus a "lieutenant" is somebody who holds a superior's position in his or her absence (compare the Latin ''locum tenens''). Similar words in other languages include the Arabic ''mulāzim'' ((アラビア語:ملازم)), meaning "holding a place", and the Hebrew word ''segen'' ((ヘブライ語:סגן)), meaning "deputy" or "second to". In the nineteenth century, British writers who considered this word either an imposition on the English language, or difficult for common soldiers and sailors, argued for it to be replaced by the calque "steadholder." However, their efforts failed, and the French word is still used, along with its many variations, (e.g. lieutenant colonel, lieutenant general, lieutenant commander, flight lieutenant, second lieutenant and many non-English language examples), in both the Old and the New World. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「lieutenant」の詳細全文を読む スポンサード リンク
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