Answer
Begriffsschrift is a German word that loosely translates to "Conceptual Notation". It was the name of a logical notation invented by Gottlob Frege in the 1870s. Begriffsschrift was designed to be a more rigorous and precise way of expressing logical statements than the informal methods that were in use at the time. It was a major influence on the development of mathematical logic and the philosophy of mathematics.