Yep. From my unabridged dictionary:

"a dominant 7th chord is the most important of the 7th chords, a major triad and a minor 7th."

For example, D A F# C, the familiar D7, rather than D A F# C#, all of which would be notes from the D major scale.

To me, a maj 7th chord is usually unpleasant. It sounds the way stale booze smells. The maj 7th chord is one reason why jazz is a not-for-profit activity.
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Tony P, you wrote "My guitar thrives on Dmaj7 chords but if I tune it right it hates C major. Maybe it needs a bridge transplant???"

I've had one guitar lesson in my life. The teacher is most talented. When I told him I had a hard time playing the C chord, he said "You're not supposed to play C on the guitar."

I think he meant that the guitar is not intended to resonate with C. Whatever he meant, I decided he is right, and I don't worry about C anymore. Whatever you do, don't ruin a good instrument by trying to make it do something it was never intended to do.