Arousal is the noun form of the verb "to arouse," which means to induce or call into existence, especially a feeling or emotion, eg: "I overheard a conversation which aroused my curiosity."
It can also mean to wake someone from sleep (though "rouse" is more commonly used) and to excite or stimulate someone sexually.
"A state of arousal" is a state of alertness or excitement; the phrase is often used to describe someone who has been sexually or chemically stimulated.
Arousal comes from the verb "rouse" which originally meant to get a hawk ready for hunting.
It can also mean to wake someone from sleep (though "rouse" is more commonly used) and to excite or stimulate someone sexually.
"A state of arousal" is a state of alertness or excitement; the phrase is often used to describe someone who has been sexually or chemically stimulated.
Arousal comes from the verb "rouse" which originally meant to get a hawk ready for hunting.