[ re-truh-nim ]
/ ˈrɛ trə nɪm /
a term coined in modification of an original term that was used alone (as acoustic guitar instead of guitar ) to distinguish it from a term referring to a later development (as electric guitar ). Other examples of retronyms are snail mail and analog watch.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019