from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Ambiguous or equivocal speech or discourse.
- n. Repetition of a word or phrase.
- n. A series of two related works
from the GNU version of the Collaborative International Dictionary of English
- n. An ambiguous speech; a figure in which a word is used an equivocal sense.
from The Century Dictionary and Cyclopedia
- n. In rhetoric: The use of a word or words twice in the same context; repetition, especially for the sake of emphasis. Unnecessary or ill-judged dilogy results in tautology (which see).
- n. Intentional use of an ambiguous expression; the word or expression so used. Ambiguity in a wider sense is called amphiboly or amphibology.
From Latin dilogia, from Ancient Greek διλογία (dilogía, "repetition"), from δίς (dís, "twice") + -λογία (-logía, "-logy") (Wiktionary)