While you're technically correct, language does evolve and if 90% of developers think relational means foreign keys and normals forms then that's what it means.

While you're technically correct, language does evolve and if 90% of developers think relational means foreign keys and normals forms then that's what it means. Words are used to communicate and sometimes get misused and take on a new meaning; that's just the way it goes. I've met very few developers or database guys who know that a relation comes from the relational algebra and has nothing to do with foreign keys or normals forms.