A physiological and psychological state of being awake or reactive to stimuli, including elevated heart rate and blood pressure and a condition of sensory alertness, mobility and readiness to respond.
The act of arousing or the state of being aroused.
Arousal from sleep or hibernation.
Sexual arousal.
An unexpected mental error.
A sudden thought, particularly one that solves a long-standing problem.
A session of brainstorming, investigating a problem to try to find solutions.
To participate in a brainstorming session.
To investigate something, or solve a problem using brainstorming.