区切 くぎ 集合 しゅうごう引数 ひきすうでしょう
kugirishi shūgōhikisūdeshō

Noun
Desu Copula

Expresses probability in a polite manner ("probably…") of 区切り子集合引数

1. Probably a delimited subset argument.

Polite
Presumptive
Conjecture
Computing