Wordnet 3.0
NOUN (1)
1. 
 inflammation of the aorta; 
The Collaborative International Dictionary of English v.0.48:
Aortitis \A`or*ti"tis\, n. [Aorta + -itis.] (Med.)
   Inflammation of the aorta.
   [1913 Webster]
WordNet (r) 3.0 (2006):
aortitis
    n 1: inflammation of the aorta