When you point out a dichotomy, you draw a clear distinction between two things. A dichotomy is a contrast between two things . When there are two ideas, especially two opposed ideas — like war and peace, or love and hate — you have a dichotomy. Dichotomy definition: division into two parts , kinds, etc.; subdivision into halves or pairs.. See examples of DICHOTOMY used in a sentence. Master the word " DICHOTOMY " in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource. A dichotomy is a partition of a whole into two parts that are jointly exhaustive and mutually exclusive. Learn about the etymology, logic, statistics, and applications of dichotomies in various fields.