Here's what rhymes with oncologia.
                        
                        
                    
                                apologia  Words that almost rhyme with oncologia
phobia  elodea  myopia  utopia  diplopia  agoraphobia  cornucopia  acrophobia  arachnophobia  homophobia  xenophobia  claustrophobia  hydrophobia  presbyopia  colloquia  catatonia  dystonia  symposia  peritonea