The English phrase replaced Hesiod’s vessel with a box. Hesiod’s Greek account uses the term pithos, generally meaning a large storage jar or container, rather than the small box imagined by modern readers.
The wording “Pandora’s box” became established through later retellings and translations. Renaissance writers helped popularize the altered image, and the expression eventually became a metaphor for an action that creates many new problems or releases unforeseen consequences.
The change is a well-known example of how classical myths can shift as they move between languages and cultures. A large pithos was a practical vessel in the ancient Greek world, often used to store commodities. The later box image is more compact and visually memorable.
Despite the title, the central narrative remains the same: Pandora opens a container, and harmful forces escape. The familiar phrase is now much more common in English than the Greek terminology used by Hesiod.