noun
a complex neural network in the central core of the brainstem; monitors the state of the body and functions in such processes as arousal and sleep and attention and muscle tone
• Syn: ↑RF
• Hypernyms: ↑neural network, ↑neural net
• Part Holonyms: ↑brainstem, ↑brain-stem, ↑brain stem
• Part Meronyms: ↑reticular activating system, ↑RAS
Useful english dictionary. 2012.