Enter a clue or pattern or both:
The Clue
Diagnostic aid (10 letter answer)
The Answer
CARDIOGRAM
Tags
Notes
The answer CARDIOGRAM is so rare that it appears less than once every 2500 puzzles.
Definition
CARDIOGRAM as a noun:
1. (electrocardiogram, cardiogram, EKG, ECG) = a graphical recording of the cardiac cycle produced by an electrocardiograph