Definition of interchangeable adjective from the Oxford Advanced Learner's Dictionary

 

interchangeable

 adjective
adjective
BrE BrE//ˌɪntəˈtʃeɪndʒəbl//
 
; NAmE NAmE//ˌɪntərˈtʃeɪndʒəbl//
 
 
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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.
See the Oxford Advanced American Dictionary entry: interchangeable