It may also be called a hypothermic reaction. An endothermic reaction is a chemical reaction in which energy (heat, light, etc.) is absorbed instead of being released as it is in a exothermic reaction. It may also be called a hypothermic reaction.
APL (named after the book A Programming Language) is a programming language developed in the 1960s by Kenneth E. Iverson. Its central datatype is the multidimensional array. It uses a large range of special graphic symbols to represent most operators, leading to very concise code.
What is an FFL? A Federal Firearms License, FFL, is a license granted by the Federal Government through the Bureau of Alcohol, Tobacco, and Firearms (ATF). A FFL is required for businesses involved in the sale of firearms interstate and intrastate, and for the manufacture of firearms or ammunition.