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From The Collaborative International Dictionary of English v.0.48:
Ology \Ol"o*gy\, n. [See -logy.] A colloquial or humorous name for any science or branch of knowledge. [1913 Webster] He had a smattering of mechanics, of physiology, geology, mineralogy, and all other ologies whatsoever. --De Quincey. [1913 Webster]