Caduceus
Also called kerykeion, herald’s staff
Archaic Greece; the medical mix-up is twentieth-century American
Hellenic symbolsCaduceus meaning
The caduceus is Hermes’ staff, usually with two snakes and wings. It means heraldry, trade, and safe passage, including toward the dead. It is not the medical symbol. That is the Rod of Asclepius, one snake, no wings.
Hermes’ staff: messages, trade, borders, and the road of the dead.
The name. Latin caduceus, from Greek kērykeion, the herald’s staff.
Where it comes from
Two snakes and, in later forms, wings. It belongs to Hermes, who crosses boundaries: merchant, thief, messenger, psychopomp. It is not the sign of medicine. That is the rod of Asclepius — one snake, no wings. The mix-up is institutional and American, famously the 1902 badge of the U.S. Army Medical Corps, which spread. A hospital that flies the caduceus is flying a mistake that became a logo. The mistake is now part of the symbol’s life.
Hellenic
Safe conduct
A herald’s staff means you do not kill the person carrying it. The snakes are a truce made visible. Hermes is not a healer; he is the one who can go where others cannot, including down and back. If the sign has wings, it is already the later, more allegorical object.
Modern
Use can outrun origin
Once a medical corps prints the wrong staff, millions learn the error as the meaning. You can correct it and still admit that correction does not rewind a century of letterheads. Symbols do this. Origin is not the only fact about them. It remains a fact.
Near this
Sources
- Homeric hymn and classical images of the kerykeion
- The medical mix-up is modern, especially in the United States
Named when the entry depends on a text, a date, or a standard. Catalog numbers are not invented.
Your margin
Private. It stays in this browser and never joins the canon.
symbol.wiki, edited as Sigilla. Last reviewed 2 October 2026. A reading of public tradition, not a ruling.