etio-, aetio- +
(Greek: cause, causation, originating; that which causes or originates something)
2. Philosophical investigations of causes and origins of phenomena.
2. Blanched as a plant exposed to insufficient sunlight.
3. Describing skin pallor which exists after being deprived of sunlight.
2. The process of blanching, bleaching, or making pale by withholding light
2. In pathology, originating from; causal; such as, an etiologic agent.
3. A reference to etiology.
2. A reference to the etiology of a disease; such as, "an etiological agent".
2. Someone who strives to find the causes of diseases via research and various forms of medical investigations.
2. Any study of causes, causation, or causality; as in philosophy, biology, or physics.
3. The study of the causes of diseases or medical disorders.
4. The cause or origin of a disease.
The word etiology is primarily used in medicine, where it refers to the science that deals with the causes or origins of diseases including the factors which produce or predispose toward a certain disease or disorder.
Today in medicine one often hears, or reads: "The etiology is unknown"; meaning: "We don't know the cause."
Aetiology is the preferred spelling in some countries, including the UK, whereas etiology, without an "a", is dominant in the United States.
2. A reference to research in the causes of an abnormal illness.
2. A reference to a treatment or medication that destroys or inactivates the causal agent of a disease.