satiety

n. complete satisfaction, repletion; excessive gratification, state of being overly full or gratified, surfeit

Hunger is a feeling experienced when the glycogen level of the liver falls below a threshold, usually followed by a desire to eat. The usually unpleasant feeling originates in the hypothalamus and is released through receptors in the liver. Although an average nourished human can survive weeks without food intake, the sensation of hunger typically begins after a couple hours without eating and is generally considered quite uncomfortable.
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Satiety being in a state of satiation; in experimental animals used with reference to eating and drinking. [more]Satiety - Community and Resources

Noun
1. the state of being satisfactorily full and unable to take on more
(synonym) repletion, satiation
(hypernym) fullness

(n.)
The state of being satiated or glutted; fullness of gratification, either of the appetite or of any sensual desire; fullness beyond desire; an excess of gratification which excites wearisomeness or loathing; repletion; satiation.