ladj. being ten more than forty ; Ln. the 12th letter of the Roman alphabet ; ln. 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) ; Ln. a cgs unit of illumination equal to the brightness of a perfectly diffusing surface that emits or reflects one lumen per square centimeter ; Ln. the cardinal number that is the product of ten and five ; L'Aquilan. the provincial capital of the Abruzzi region in central Italy ; L'Enfantn. United States architect (born in France) who laid out the city plan for Washington (1754-1825) ; L-Pn. a long-playing phonograph record ; designed to be played at 33.3 rpm ; L-platen. a square plate bearing the letter L that is attached to both ends of a car to indicate that the driver is a learner ; L-shapedadj. shaped in the form of the letter L ; L. M. Montgomeryn. Canadian novelist (1874-1942) ; L. monocytogenesn. the type species of the genus Listeria ; can cause meningitis, encephalitis, septicemia, endocarditis, abortion, abscesses, listeriosis ; L. Ron Hubbardn. a United States writer of science fiction and founder of Scientology (1911-1986) ; L. S. Lowryn. English painter (1887-1976) ; L.A.n. a city in southern California ; motion picture capital of the world ; most populous city of California and second largest in the United States ;