Is there a word that means “a parent who has exactly one child”?
EDIT: I am asking for purposes of creating a computing construct. But if there were an answer that is clearly correct for another domain, I’d be delighted to use it.
Perhaps the closest is uniparous:
I offer one-time:
The verbs “to be a mother” and “to be a father” mean to deliver a child as a parent. Even if a person is already a parent, they can still “be a parent” again:
Oddly, some people seem to use this to refer to labour, not count of children:
It also generalises well (and is way more commonly heard) with higher numbers: