There are 14 13-letter words that end with 'ology'.
| biotechnology | chronobiology |
| cryptozoology | ecophysiology |
| helminthology | endocrinology |
| epizootiology | geochronology |
| geomorphology | roentgenology |
| phenomenology | sedimentology |
| ophthalmology | psychobiology |
Note: These 14 13-letter words that end with 'ology' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words end with iology, nology, tology, rology, hology, cology, eology, mology, pology, bology, lology, oology, yology, dology, xology, gology, sology, fology, kology.
6-letter words end with 'ology' (1)