Plural of liter; units of liquid volume, with one liter equaling about one quart in the metric system.
From French 'litre,' from Greek 'litra' (a unit of weight). Adopted into the metric system in the 1790s during the French Revolution.
Your body is about 60% water—roughly 42 liters—and you lose about 1-2 liters daily through breathing, sweating, and elimination, which is why hydration is constantly talked about.
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