Mammoth Uncensored Word List:
43 words ending with hy, 15 letters long

antipornography autolithography autophytography autoradiography biostratigraphy blepharorrhaphy chemoautotrophy cholangiography cholecystopathy cineangiography cinemicrography crystallography encephalography lymphadenopathy macroangiopathy microangiopathy numismatography onychodystrophy ophthalmography palaeogeography palaeontography pancreatography photoautotrophy phototelegraphy phototopography phototypography photoxylography plethysmography polysomnography psychobiography pyrophotography radioautography radiotelegraphy roentgenography semipornography staphylorrhaphy telephotography teleradiography trachelorrhaphy typolithography ultrasonography xeromammography xeroradiography