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The word bolus comes from the Greek meaning lump.



There actually is not a certain word, but more like a phrase: a ball of chewed up food and saliva that has been swallowed.


This depends on the context, because a bolus can be a mass of material moving within a portion of the gastrointestinal tract (esp. oral cavity, pharynx, esophagus, intestine or colon), a therapeutically large and rapid intravenous injection, or a very large pill used in veterinary therapy ("horse pill"). Outside of the medical/physiological realm, the word can be used to mean just about any mass of objects or substance - a "bolus of dolphins", for example. See also related links on the left blue pane.
A bolus is defined as "a rounded mass" and "a dose of a medicine given intravenously". It is not an organ in the body.

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15y ago

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