interchanging

English

Verb

interchanging

1. present participle of interchange

Noun

interchanging (plural interchangings)

1. The act by which things are interchanged.
   • 1936, Robert William West, ‎Claude Edgar Kantner, Phonetics (page 162)

     So the science of phonetic metamorphology concerns itself quite largely with interchangings among the sounds of speech.