-logy
Pronunciation : -lo*gy.
Etymology : [Gr. Logic.]
Definition : Defn: A combining form denoting a discourse, treatise, doctrine, theory, science; as, theology, geology, biology, mineralogy.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder