1. [ noun ] a metric unit of capacity equal to the volume of 1 kilogram of pure water at 4 degrees centigrade and 760 mm of mercury (or approximately 1.76 pints)
Synonyms: liter cubic_decimetre cubic_decimeter litre
Related terms: metric_capacity_unit dekaliter deciliter
2. [ adjective ] being ten more than forty
Synonyms: 50 fifty
Related terms: cardinal
3. [ noun ] the 12th letter of the Roman alphabet
Related terms: letter Roman_alphabet
4. [ noun ] (mathematics) the cardinal number that is the product of ten and five
Synonyms: 50 fifty
Related terms: large_integer
5. [ noun ] (physics) a cgs unit of illumination equal to the brightness of a perfectly diffusing surface that emits or reflects one lumen per square centimeter
Synonyms: lambert
Related terms: illumination_unit
Similar spelling:   La