Terminology Ques: 5 mile turn vs. delay vectors

The other day I was doing multiple approaches under the hood. I needed
an extra minute or two to setup for the next approach and requested a "5
mile turn." From my understanding, this means that while on downwind to
not turn me until 5 miles from the FAF. The controller didn't
understand. I thought maybe he didn't hear me clearly so I repeated a
"requesting a 5 mile turn." He said, "I don't know what that is." I
then said, "let me try this, how about delay vectors." That did the
trick. I thought a "X mile turn" is standard terminology. Is it not?

Gerald Sylvester