Miasma
The concept of ritual pollution caused by murder, contact with death, or moral transgression that required purification.
The Meaning of Miasma
Miasma was the Greek concept of spiritual pollution — a contagion that attached to individuals who committed murder, violated sacred law, or contacted death. It was not metaphorical but literal in Greek belief: miasma could spread from person to person, contaminate an entire city, and provoke plague, famine, or divine wrath until it was cleansed through katharsis (purification). When Oedipus unknowingly killed his father and married his mother, the miasma from his crimes poisoned all of Thebes — crops failed, women miscarried, plague descended. Only discovering and expelling the source of pollution could save the city. Orestes, after killing his mother Clytemnestra, was pursued by the Erinyes because his matricide generated miasma so severe that even the gods debated whether purification was possible. Apollo purified him, but Athena had to establish a court — the Areopagus — to finally resolve the case.
Fun Fact
The English word miasma originally meant bad air causing disease — the Greeks meant something more precise: spiritual contamination.
Words We Inherited
English words and phrases that trace back to this myth. See our full guide to English words from Greek mythology.
Explore Further
Miasma
💭 conceptRitual pollution
Miasma was the concept of ritual pollution — a spiritual contamination caused by bloodshed, sacrilege, or contact with death that could infect an entire community.
Nosos
💭 conceptDisease and Pollution
The Greek concept of disease as moral and spiritual corruption, not merely physical illness.
Pharmakos
💭 conceptreligion, ritual
The scapegoat — a person selected to carry the community's pollution and be driven out or ritually sacrificed to purify the city.
Catharsis
💭 conceptEmotional purification through art
Aristotle's concept that tragedy purifies the audience by arousing and then releasing pity and fear.
Catharsis
💭 conceptRitual and Drama
The concept of emotional purification through experiencing pity and fear in Greek tragedy.
Katharsis
💭 conceptPurification and emotional release
Katharsis was both a ritual purification from miasma and — in Aristotle's famous definition — the emotional cleansing that tragedy performs on its audience.
Divine Justice
💭 conceptEthics
The principle that the gods punish wrongdoing and uphold moral order in the cosmos
Pharmakon
💭 conceptThe substance that is both cure and poison
The Greek word that means simultaneously medicine and poison — a concept that embodies the duality at the heart of all power.
Orphic Mysteries
💭 conceptreligion, afterlife
An initiatory religious tradition attributed to the mythical poet Orpheus, teaching reincarnation, ritual purity, and liberation of the soul through sacred texts and ascetic practices.
God of Healing
💭 conceptHealing, medicine, plague, purification
Apollo and his son Asclepius govern healing — Apollo as the source of medical knowledge and Asclepius as its practitioner.
Tantalum
💭 conceptChemistry and mythology
A chemical element named after King Tantalus of Greek mythology because of the element's tantalising inability to absorb acids, just as Tantalus could never reach the water and fruit surrounding him
Achlys
💭 conceptDeath and Darkness
The personification of the mist of death that clouded the eyes of the dying, one of the most ancient Greek concepts of mortality.