Definition of retronym in English:

retronym

noun

  • A new term created from an existing word in order to distinguish it from the meaning that has emerged through progress or technological development (e.g., cloth diaper is a retronym necessitated by the fact that diaper now more commonly refers to a disposable diaper)

Origin

1980s: blend of retro- and -onym.

Pronunciation:

retronym

/ˈretrōnim/