retronym

英 ['retrəʊnɪm] 美 ['retroʊnɪm]

• n. 当某事物的原名不再适用的时候为它造的新词；如"第一次世界大战(World War I)"；其在二战之前叫做"大战"(the Great War)

英英释义

Noun:

1. a word introduced because an existing term has become inadequate;

   "Nobody ever heard of analog clocks until digital clocks became common, so `analog clock' is a retronym"