encyclopedia
En*cy`clo*pe"di*a, En*cy`clo*pæ"di*a, n. Etym: [NL., fr. Gr. encyclopédie. See Cyclopedia, and Encyclical.] [Formerly written encyclopædy and encyclopedy.] Defn: The circle of arts and sciences; a comprehensive summary of knowledge, or of a branch of knowledge; esp., a work in which the various branches of science or art are discussed separately, and usually in alphabetical order; a cyclopedia.