There are 14 13-letter words that end with 'ogy'.
| biotechnology | chronobiology |
| cryptozoology | ecophysiology |
| helminthology | endocrinology |
| epizootiology | geochronology |
| geomorphology | roentgenology |
| phenomenology | sedimentology |
| ophthalmology | psychobiology |
Note: These 14 13-letter words that end with 'ogy' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with logy, gogy, bogy, dogy, fogy, oogy, pogy, togy.
4-letter words end with 'ogy' (5)