metonymy

Metonymy traces to Ancient Greek metōnymía, formed from meta- and ónoma, "name." The term is recorded in Greek rhetorical tradition by the 1st century BCE. It named the act of calling one thing by another's name. The coinage points to substitution as its core.

Greek metōnymía entered Latin as metonymia in the 1st century BCE. Roman rhetoricians such as Cicero discussed the figure in Latin treatises dated around 55 BCE. The Latin form kept the same sense of naming by association. It anchored the term in classical rhetoric.

By the late 16th century, English writers borrowed metonymy from Latin and Greek. The word appears in English rhetorical manuals dated to 1589. It referred to figures like "the crown" for monarchy. The specialized scholarly sense held steady.

In modern English, metonymy has remained a technical term in rhetoric and linguistics. It has also appeared in literary criticism since the 19th century. The spelling stabilized as metonymy, mirroring the Greek root. The meaning still turns on substitution by association.