rumin-, rumina- +

1. Partly digested food that cows and other ruminants return to the mouth, after it has passed into the first stomach, to chew again as an aid to more complete digestion.
2. Something held in the human mouth and chewed; such as, a quid of tobacco.

Although it is not etymologically related to rumin-, this term is primarily associated with the various activities of rumination and ruminants.

The large first chamber of a ruminant animal's stomach in which microorganisms break down plant cellulose before the food is returned to the mouth as cud for additional chewing.

Here food is collected and returned to the mouth as cud for chewing.

1. Any cud-chewing hoofed mammal with an even number of toes and a stomach with multiple chambers; such as, cattle, goats, camels, and giraffes.
2. Any even-toed, hoofed mammal of the suborder Ruminantia, consisting of cloven-hoofed, cud-chewing quadrupeds, and including, (besides domestic cattle), bison, buffalo, deer, antelopes, giraffes, camels, and chevrotains (small deer-like, hornless ruminants, of the genera Hyemoschus and Tragulus native to the tropical rain forests of central Africa, India, and southeast Asia.

Also called "mouse deer".

The vegetable food, after the first mastication, enters the first stomach.

After that, it passes into the second stomach, where it is moistened, and formed into pellets which the animal has the power of bringing back to the mouth to be chewed again; after which, it is swallowed into the third stomach, whence it passes to the fourth stomach, where it is finally digested.

1. To think carefully, and at length, about something.
2. To turn a matter (subject) over and over in the mind.
3. To partially regurgitate partially digested food and to chew it again; referring to ruminants (various cud-chewing hoofed mammals having a stomach divided into four; or occasionally three, compartments; such as, cattle, sheep, goats, deer, camels, and giraffes.
4. Etymology: "to turn over in the mind", also "to chew cud" (1547); from Latin ruminatus, ruminare, "to chew the cud, to turn over in the mind".

1. The act of pondering; meditation.
2. Persistent meditation on a subject, particularly thinking about and reviewing one's past.
3. The act, or process, of chewing cud.
4. In ruminants, the casting up of food out of the rumen and the chewing of it a second time.
5. The regurgitation of small amounts of food; as sometimes seen in some infants after feeding.

1. Persistently or morbidly thoughtful.
2. Characterized by a preoccupation with certain thoughts and ideas.

1. A reflective thinker characterized by quiet contemplation.
2. Someone who turns a subject over and over in the mind by thinking about it for a period of time.