bolus

bolus /bo·lus/ (bo´lus)

1. a rounded mass of food or pharmaceutical preparation ready to swallow, or such a mass passing through the gastrointestinal tract.

2. a concentrated mass of pharmaceutical preparation, e.g., an opaque contrast medium, given intravenously.

3. a mass of scattering material, such as wax or paraffin, placed between the radiation source and the skin to achieve a precalculated isodose pattern in the tissue irradiated.

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bo·lus (bls)

n. pl. bo·lus·es

1. A round mass.

2. A single, relatively large dose of a drug that is administered for therapeutic purposes and taken orally.

3. A concentrated mass of a pharmaceutical substance administered intravenously for therapeutic or diagnostic purposes.

4. A soft mass of chewed food within the mouth or alimentary canal.

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bolus (bō´ls),

n a mass of food ready to be swallowed or a mass passing through the intestines.

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bolus

1. a rounded mass of food or pharmaceutical preparation ready to be swallowed, or such a mass passing through the gastrointestinal tract. In previous times most medication for horses was given by bolus. Called also ball.

2. a concentrated mass of pharmaceutical preparation, e.g. an opaque contrast medium, given intravenously.

3. a mass of scattering material, such as wax or paraffin, placed between the radiation source and the skin to achieve a precalculated isodose pattern in the tissue irradiated.

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alimentary bolus

the mass of food, made ready by mastication, that enters the esophagus at one swallow.

intraruminal identification bolus

contain passive radiofrequency responders for individual animal identification. Used in sheep and cattle.

physic bolus

see physic (2).

purging bolus

an oldtime treatment for equine colic. Usually contained aloes or istin.