Mammoth Uncensored Word List:
26 words ending with hy, 16 letters long

adrenomyelopathy aneurysmorrhaphy astrophotography chemolithotrophy cholecystography chondrodystrophy cinefluorography echocardiography electromyography hemoglobinopathy lymphangiography macrophotography microphotography microradiography neuroarthropathy osteoarthropathy photoheliography photolithography photomacrography photomicrography photozincography radiophotography rechromatography symphyseorrhaphy symphysiorrhaphy ventriculography