from The American Heritage® Dictionary of the English Language, 4th Edition
- suffix Variant of -logy.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- suffix Alternative form of -logy, used for phonological reasons when the preceding morpheme ends in certain consonant sounds.
- suffix added to an ordinary English word to create a name for a (possibly non-existent) field of study
-o- ("(interconsonantal)") + -logy. (Wiktionary)