Pronunciation: (lē'tur),[key] —n. a unit of capacity redefined in 1964 by a reduction of 28 parts in a million to be exactly equal to one cubic decimeter. It is equivalent to 1.0567 U.S. liquid quarts and is equal to the volume of one kilogram of distilled water at 4°C. Abbr.: l Also,esp. Brit.,litre.