Definition of retronym in English:

retronym

Syllabification: ret·ro·nym
Pronunciation: /ˈretrōnim
 
/

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.

Definition of retronym in:

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Pronunciation: ˈbɪmb(ə)l
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walk or travel at a leisurely pace