Formal language
set of strings of symbols that may be constrained by rules that are specific to it; words whose letters are taken from an alphabet and are well-formed according to a specific set of rules / From Wikipedia, the free encyclopedia
In mathematics, computer science and linguistics, a formal language is one that has a particular set of symbols, and whose expressions are made according to a particular set of rules. The symbol is often used as a variable for formal languages in logic.[1]
Unlike natural languages, the symbols and formulas in formal languages are syntactically and semantically related to one another in a precise way.[2] As a result, formal languages are completely (or almost completely) void of ambiguity.[3]