Wordnet 3.0
NOUN (1)
1. 
 inflammation of the female pelvic organs (especially the Fallopian tubes) caused by infection by any of several microorganisms (chiefly gonococci and chlamydia); 
 symptoms are abdominal pain and fever and foul-smelling vaginal discharge; 
[syn: pelvic inflammatory disease, PID]
WordNet (r) 3.0 (2006):
pelvic inflammatory disease
    n 1: inflammation of the female pelvic organs (especially the
         Fallopian tubes) caused by infection by any of several
         microorganisms (chiefly gonococci and chlamydia); symptoms
         are abdominal pain and fever and foul-smelling vaginal
         discharge [syn: pelvic inflammatory disease, PID]