This should be a perfect example of why the Catholic Church goes out of its way to DEFINE TERMS. Vocabulary is important and so is the way we use language. I’m not trying to be difficult but really trying to show you something people would be more aware of or at least understanding. But when we use terms like purgatory, trinity, Mother of God, Holy Orders, Consecration, sacrament, etc. we make up the term to fit the definition that already seems to exist within he text of the scriptures and what has been passed down to us through oral tradition or sacred traditions more specifically.
We see a tall building… so what do we call it? High rise, skyscraper, etc.
Just a little point here.
As far as the priest is concerned, he is required particularly as a clergy to form his conscience according to the teachings of the Church. If his conscience is different on such a matter clearly defined by the majesterium then he is absolutely wrong. He could be excommunicated for teaching such heresy. He, not your spouse, at that particular point is responsible for that teaching. He may have been referring to you, and not your spouse. He knows he can’t make you do anything you’re not supposed to do. So he had to tell you the best he could. This is a reason the Church requires us to obtain a dispensation for marrying someone who is not Catholic.