No apologies: I have not attempted to research this (beyond reviewing the list of questions CV provided that may have answered this query). I taught this in class last week for diagnosing logistic multiple regression models, and I warned the students in advance that I did not know the origins of the name.
What is the history of the name of the ROC curve: Receiver Operating Characteristic?
I recall something about it being mentioned in an avocational book (like The Lady Tasting Tea or one of Mario Livio's books)...but if anyone has some history to share, that would be welcome.