n.
Pronunciation: ' o ̇ r- ə
Function: noun
Etymology: Middle English, from Latin, puff of air, breeze, from Greek; probably akin to Greek a ē r air
Date: 1694
1 a : a subtle sensory stimulus (as an aroma) b : a distinctive atmosphere surrounding a given source <the place had an aura of mystery>
2 : a luminous radiation : NIMBUS
3 : a subjective sensation (as of lights) experienced before an attack of some disorders (as epilepsy or a migraine)
4 : an energy field that is held to emanate from a living being