Dichotomy rhymes with:
anatomy, appendectomy, epitome, hysterectomies, hysterectomy, keratotomy, lumpectomy, mastectomy, pallidotomy, prostatectomy, tonsillectomy, vasectomy
Dichotomy sounds like:
d'agostino, dagestan, dagostino, dakotan, daughton, dedication, deduction, degaetano, deighton, desiccation, destin, destiny, destitution, detection, detoxication, dickstein, dictation, diction, dictum, dideoxycytidine, digaetano, digestion, digidyne, disdain, dissection, dissociation, doughten, dukedom, dustin, dustman, duston