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ALGOL (/ˈælɡɒl, -ɡɔːl/; short for “Algorithmic Language“) is a family of imperative computer programming languages originally developed in 1958. ALGOL heavily influenced many other languages and was the standard method for algorithm description used by the Association for Computing Machinery (ACM) in textbooks and academic sources until object-oriented languages came around, for more than thirty years.
In the sense that the syntax of most modern languages is “Algol-like”, it was arguably the most influential of the four high-level programming languages among which it was roughly contemporary: FORTRAN, Lisp, and COBOL. It was designed to avoid some of the perceived problems with FORTRAN and eventually gave rise to many other programming languages, including PL/I, Simula, BCPL, B, Pascal, and C.