noun
subscripted variable
A variable with a subscript, used in programming and mathematical notation.
配列の要素は添え字付き変数で表される。
Array elements are represented by subscripted variables.
数式の中で、x₁やy₂は添え字付き変数と呼ばれる。
In mathematical expressions, x₁ and y₂ are called subscripted variables.
Compound of 添え字 (subscript) + 付き (attached) + 変数 (variable).