Search Result for "atrial": 
Wordnet 3.0

ADJECTIVE (1)

1. of or relating to a cavity or chamber in the body (especially one of the upper chambers of the heart); 



The Collaborative International Dictionary of English v.0.48:

Atrial \A"tri*al\, a.
   Of or pertaining to an atrium.
   [1913 Webster]


WordNet (r) 3.0 (2006):

atrial
    adj 1: of or relating to a cavity or chamber in the body
           (especially one of the upper chambers of the heart)