•a metric unit of capacity, formerly defined as the volume of one kilogram of pure water under standard conditions; now equal to 1,000 cubic centimeters (or approximately 1.75 pints)
From French litre, from Medieval Latin litra, from Ancient Greek λίτρα (lítra, “a Sicilian coin, a measure of weight”). Related to Latin lībra. Doublet of arratel, libbra, Libra, libra, lira, litra, livre, and rottol.