that can be exchanged, especially without affecting the way in which something works The two words are virtually interchangeable (= have almost the same meaning). interchangeable with something The V8 engines are all interchangeable with each other.
NAmE//ˌɪntərˌtʃeɪndʒəˈbɪlət̮i//
noun [uncountable] NAmE//ˌɪntərˈtʃeɪndʒəbli//
adverb These terms are used interchangeably.See interchangeable in the Oxford Advanced Learner's DictionaryCheck pronunciation: interchangeable