noun
set-of type
A technical computing term referring to a data type that represents a set of values, often used in programming language type systems.
このプログラミング言語では、単一型集合型を使って値の集合を定義できます。
In this programming language, you can define a set of values using the set-of type.
Compound of 単一型 (single type) and 集合型 (set type), likely a calque from English 'set-of type' used in computer science.