Mammoth Uncensored Word List:
50 words ending with my, 12 letters long

anthropotomy appendectomy autoallogamy bunionectomy calycanthemy cephalectomy cervicectomy cingulectomy clitorectomy coccygectomy cytotaxonomy duodenectomy duodenostomy fibromyotomy foraminotomy gangliectomy gingivectomy homoiothermy hysterectomy lampadedromy laryngectomy maxillectomy meniscectomy microanatomy necrosectomy neuroanatomy oophorectomy orchidectomy patellectomy pharyngotomy pinealectomy postvagotomy prepucectomy rhytidectomy salpingotomy serotaxonomy stapedectomy stereochromy tetrachotomy thermochromy thoracostomy thrombectomy tonsillotomy trachelotomy tracheostomy turbinectomy tympanectomy tympanostomy ureterostomy xerophthalmy