All 7 Uses

aura
in
The House of Hades
(Auto-generated)

Annabeth wondered if demigods didn't smell the same in Tartarus, or if the other scents here were so powerful, they masked a demigod's aura.†
p. 54.1 *
He was actually glowing—surrounded by a rosy aura.†
p. 150.9
Hazel tried to take comfort in Frank's presence, his new aura of solidity and strength.†
p. 193.9
Rachel Dare glowed in a green aura, as if hit by a soft emerald spotlight.†
p. 252.9
Then the wind faded and the aura was gone.†
p. 252.9
If Jason no longer gave off the right sort of vibe, or the aura of a Roman leader ... Frank made it to his friends as a wave of Cyclopes crashed into them.†
p. 506.9
He shot white-hot columns of flame at the giant, but Clytius's smoky aura absorbed them on impact.†
p. 551.8

Definitions:

(1) (aura)
A distinctive quality, mood, or feeling that seems to surround a person, place, or thing; or, more literally, a glowing light shown around someone's head or body in spiritual or artistic images
(2) (meaning too rare to warrant focus)
In medicine, an "aura" can reference a sensation (as of a cold breeze or bright light) that precedes the onset of certain disorders such as a migraine attack or epileptic seizure.