Here's what rhymes with geometrodynamical.
                        
                        
                    
                                dynamical  Words that almost rhyme with geometrodynamical
mechanical  botanical  tyrannical  biomechanical  satanical  puritanical  electromechanical  magical  fascicle  classical  graphical  tactical  fanatical  capitol  mannitol  tragical  theatrical  biographical  fanciful  problematical  irascible  sabbatical  pragmatical  monastical  geographical  mathematical  neoclassical  fantastical  typographical  systematical  topographical  nontheatrical  autobiographical  bibliographical  expansible  contractible  ecclesiastical  historiographical  lexicographical