The Collaborative International Dictionary
Dilogy
Dilogy \Dil"o*gy\, n.; pl. Dilogies. [L. dilogia, Gr. ?, fr. ? doubtful; di- = di`s- twice + ? to speak.] (Rhet.) An ambiguous speech; a figure in which a word is used an equivocal sense. [R.]
Wiktionary
dilogy
n. 1 ambiguous#English or equivocal speech or discourse. 2 repetition#English of a word or phrase. 3 A series of two related works