The term rumination, meaning "to chew the cud," is used in several contexts:

[edit] Digestive rumination

• In animals, rumination is a part of normal digestion, in which the animal (known as a ruminant) brings up swallowed food (usually grass or hay), remasticates it, and swallows it. This aids the animal by allowing it to eat quickly and chew later while it is resting.
• In humans, rumination syndrome is a generally involuntary eating disorder characterized by the regurgitation of recently ingested food without retching

[edit] Mental rumination

• Mental rumination - contemplation or reflection, which may become persistent and recurrent worrying or brooding

[edit] Other

• Ruminations – a popular email column and series of books written by comedian Aaron Karo

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