I think you didn't mean the term as such but the value system: https://en.wikipedia.org/wiki/Judeo-Christian_ethics
I thought you used the term Judeo-Christian tradition focusing on values (e.g. ethics). The 1800s meaning does not really make sense as it refers to Jewish converts to Christianity not to shared values. The shared value idea is from the America's in the 1940s not from Europe. It was never used in Europe like that before the time around the second world war, as Jews (and Muslims) were seen as foreign elements and discriminated against for most of the European History. From your wikipedia article:
"Historian K. Healan Gaston has stated that the term emerged as a descriptor of the United States in the 1930s, when the US sought to forge a unified cultural identity in an attempt to distinguish itself from the fascism and communism in Europe."
If you don't think that the term "Judeo-Christian Ethics or Values" excludes Islam, maybe we can term it "Judeo-Muslim Ethics" ... Christianity is in the middle, should be ok for you to use the new term ;) It's shorter and everybody knows that Christianity has to be included in it. My point why not use the older, correct term "Abrahamic"? I think people should be precise with their language.
There are people that argue that Islam has a different value system and does not fit in with the other two religions. Yet, those are usually extreme right wing. Angela Saini takes their view point pretty well apart. Being christian and having religious Jewish and Muslim friends in Europe, I feel we share more than most Evangelicals I met in the U.S. (I just say intelligent design ... ). None of my European friends has any trouble with Evolution (and trusting in Science ... because it works ;)