noun

• Distinctive atmosphere or quality associated with something.
• (parapsychology) An invisible force surrounding a living creature.
• (medicine) Perceptual disturbance experienced by some migraine sufferers before a migraine headache.
• (medicine) Telltale sensation experienced by some people with epilepsy before a seizure.
• A female given name from Latin shortened from Aurelia.
• (Greek mythology, Roman mythology) A minor female deity. See Aura (mythology).
• (astronomy) Acronym of Association of Universities for Research in Astronomy.
• (India) Acronym of Autonomous Unmanned Research Aircraft.