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<p><b>New page</b></p><div>[[File:Bottle_of_Dewar's_whisky.jpg|thumb]] '''Fifth (unit)''' is a unit of volume used primarily in the [[United States]] to measure [[alcoholic beverages]]. It is equivalent to one-fifth of a [[United States gallon]], or approximately 757 ml. The term originated during the 19th century when bottles were produced in standard sizes, with the fifth being one of the most common for [[liquor]]. Today, the term is still used, though the actual volume of a standard liquor bottle in the U.S. has been rounded to 750 ml, which is also known as a metric fifth.<br />
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==History==<br />
The use of the fifth as a standard measure for selling and consuming alcoholic beverages dates back to the early 19th century in the United States. The size was convenient for producers, retailers, and consumers, balancing the need for a bottle that was both large enough to provide value and small enough to be consumed responsibly. The fifth became a standard size for liquor bottles and was recognized as such until the late 20th century when the transition to metric measurements led to the adoption of the 750 ml bottle size, which is very close to the traditional fifth but aligns with the [[International System of Units]].<br />
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==Measurement==<br />
A fifth of a gallon is equivalent to 25.6 U.S. fluid ounces (757 ml). This measurement was widely used in the United States for the volume of liquor bottles. In comparison, the metric system's adoption introduced the 750 ml bottle, which is now the standard for wine and spirits in many countries, including the U.S. This change was part of a broader move towards metrication in the country, aimed at standardizing measurements for international trade and commerce.<br />
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==Cultural Significance==<br />
The fifth has held a significant place in American culture, particularly in the context of alcoholic beverages. It was a common unit of purchase for spirits and played a role in the social and economic aspects of alcohol consumption. The term "fifth" is still used colloquially to refer to a bottle of liquor, though the actual volume has shifted slightly to the metric equivalent.<br />
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==Current Usage==<br />
While the exact volume of a fifth has been replaced by the 750 ml standard, the term remains in use. It is a testament to the lasting impact of historical measurement systems on modern language and culture. The transition to metric measurements has standardized bottle sizes internationally, but the legacy of the fifth lives on in the vernacular of alcohol consumption.<br />
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==See Also==<br />
* [[Alcoholic beverage]]<br />
* [[United States customary units]]<br />
* [[Metrication in the United States]]<br />
* [[International System of Units]]<br />
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[[Category:Units of volume]]<br />
[[Category:Alcohol measurement]]<br />
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