||Au"ra (?), n.; pl.
Auræ (?). [L. aura air, akin to Gr. ?.]
1. Any subtile, invisible emanation, effluvium, or
exhalation from a substance, as the aroma of flowers, the odor of the
blood, a supposed fertilizing emanation from the pollen of flowers,
2. (Med.) The peculiar sensation, as of a
light vapor, or cold air, rising from the trunk or limbs towards the head,
a premonitory symptom of epilepsy or hysterics.
Electric aura, a supposed electric fluid,
emanating from an electrified body, and forming a mass surrounding it,
called the electric atmosphere. See Atmosphere, 2.