Relating to the Top Chambers of the Heart
This page is the CodyCross answer for the clue below from Comics, Group 1080, Puzzle 4 (Backup Feature).
Question is: Relating to the Top Chambers of the Heart
and the answer is: ATRIAL
Word Meaning:
ATRIAL — Of or pertaining to an atrium, especially the atrium of the heart.
Definitions from Wiktionary.