All 8 Uses

adrenaline
in
Angelfall
(Auto-generated)

The post-fight adrenaline has me literally trembling.†
p. 49.5 *

adrenaline = “fight or flight” stimulating hormone
The adrenaline rush of a run for freedom drains, and I'm back to being scared and tired.†
p. 103.3

adrenaline rush = the intense feeling that comes from an increase in the "fight or flight" hormone
My heart thunders from the adrenaline, and I'm practically panting in my need for blood.†
p. 114.1

adrenaline = “fight or flight” stimulating hormone
I sit on a metal folding chair, trembling with the adrenaline crash.†
p. 115.1
The last thing I feel like doing with all this adrenaline rushing through my veins is sleep under glass surrounded by desperate people.†
p. 165.3
I can't tell if his stumbling is from recovering from surgery or from the adrenaline crash after his rampage.†
p. 269.1
Another truck's headlights sweep across him and I can see his curiosity fighting his adrenaline.†
p. 273.7
But to the others, especially in their adrenaline-fueled states, it's an enemy attack.†
p. 281.8

Definitions:

(1) (adrenaline)
“fight or flight” stimulating hormone secreted by the adrenal gland in response to stress (making the body feel excited and ready for action)

Doctors are more likely to use the term epinephrine (possibly shortened to epi or EP). Adrenalin as a proper noun without the ending "e" is a trademark name for the same chemical.
(2) (meaning too rare to warrant focus)