AL has various meanings in the Scientific & Educational category. Discover the full forms, definitions, and usage contexts of AL in Scientific & Educational.
Ad libitum is Latin for at one's pleasure; it is often shortened to ad lib or ad-lib. The roughly synonymous phrase a bene placito is less common but, in its Italian form a piacere, entered the musical lingua franca.
Scientific & EducationalAluminium or aluminum is a chemical element with symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. By mass, aluminium makes up about 8% of the Earth's crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below.
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