noun
combinator
Technical term used in computer science and mathematics for a function or operator that combines elements, especially in functional programming and lambda calculus.
Yコンビネータは再帰を実現するための高階関数です。
The Y combinator is a higher-order function for implementing recursion.
パーサコンビネータを使うと、文法
Using parser combinators, you can describe grammars concisely.