heteronym

The story

1. Portuguese · calque ofheterónimo
2. Ancient Greek · derived fromἑτερώνυμος
3. English todayheteronym

By surface analysis, hetero (“different”) + -onym (“name”). Compare Ancient Greek ἑτερώνυμος (heterṓnumos). First attested in 1885 in sense 1. The coining of this term in sense 3 (as Portuguese heterónimo) is usually attributed to Fernando Pessoa.

First known use, by meaning

• from 1885 Calque.
• from 1889 A word having the same spelling as another, but with a different meaning and (often) pronunciation.