retraction

== English == === Etymology === From re- +‎ traction or retract +‎ -ion. === Pronunciation === IPA(key): /ɹɪˈtɹækʃən/ === Noun === retraction (countable and uncountable, plural retractions) An act or instance of retracting. A statement printed or broadcast in a public forum which effects the withdrawal of an earlier assertion, and which concedes that the earlier assertion was in error. (mathematics) A continuous function from a topological space onto a subspace which is the identity on that subspace. ==== Derived terms ==== ==== Translations ==== ==== Further reading ==== Retraction on Wikipedia.Wikipedia === Anagrams === interactor, triaconter