For what it's worth, "ecumenical" means promoting Christian unity. So if Catholics carry dialogue with protestants, it may be ecumenical in nature, but with Jews or Muslims (as commendable and fruitful as it may be, but that's not the point) it can't be called that.
Maybe it's specific to american english.
I checked cambridge dictionary and it confirms that definition : tending to support and encourage unity among different religions
Merriam-webster has a similar definition : Worldwide or general in extent, influence, or application
Also collins dictionary : interreligious or interdenominational
https://dictionary.cambridge.org/dictionary/english/ecumenic...
https://www.merriam-webster.com/dictionary/ecumenical
https://www.collinsdictionary.com/dictionary/english/ecumeni...
Link to the Frasier clip :) https://www.youtube.com/watch?v=QfrFkxDzpLU
Yes, but that's the broader understanding, not related to religion. You can even find somewhat bizarre (to my ear at least) examples like "ecumenical meal of German, Italian, and Chinese dishes", but it's a turn of phrase, and not necessarily applicable in the religious context.
In the religious context the very same Merriam-Webster you just quoted defines ecumenism as:
"a : of, relating to, or representing the whole of a body of churches
b : promoting or tending toward worldwide Christian unity or cooperation"
It's kind of like you can have a coding or eating marathon... because in broad sense it's defined as any "long-lasting or difficult task or activity"... but then you still shouldn't call a 10-mile run "marathon".
https://www.oxfordlearnersdictionaries.com/definition/englis...
"involving or joining together members of different branches of the Christian Church"
https://dictionary.cambridge.org/dictionary/english/ecumenic...
"encouraging the different Christian Churches to unite"
The same in encyclopedias:
https://www.britannica.com/topic/ecumenism
"ecumenism, movement or tendency toward worldwide Christian unity or cooperation. The term, of recent origin, emphasizes what is viewed as the universality of the Christian faith and unity among churches."
https://en.wikipedia.org/wiki/Ecumenism
"Ecumenism (/ɪˈkjuːmənɪzəm/), also spelled oecumenism, is the concept and principle in which Christians who belong to different Christian denominations work together to develop closer relationships among their churches and promote Christian unity."
("Not to be confused with Interfaith dialogue", correctly points out the article).
But maybe I'm just a purist. (Not a native English speaker either, if that matters, although the term is rather universal and not really exclusive to English).
I wasn't aware of the christian specific meaning of the word before reading your first comment. Thanks
It's not a super commonly used word, so I'm unsurprised that the definition you were taught is not how it's contemporarily used in middle America. Probably a case where if enough people use a word "wrong" then the "wrong" definition becomes a valid usage.
For example, a page explicitly outlining an ecumenical relationship with Muslims from the Archdiocese of Chicago: https://eia.archchicago.org/muslim-catholic-relations/about-...
Now, if "ecumenical" and "interreligious" were really a potato/potahto thing, would there be a reason for using both side by side... I'm sure you see my point.
The event is called "Muslim-Catholic Interfaith Iftar Dinner". Interfaith, not "ecumenical".
I didn't watch the video itself. Does the bishop call this relation "ecumenical"?
I don't argue with what the common use is, or seems to be (let alone in the US, where I don't live).
I'd only insist that this particular common use - however widespread - is kind of incorrect, or at least inaccurate, misleading.