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Dictionary.com Unabridged (v 1.1) - Cite This Source - Share This

bo·lus

Audio Help [boh-luh

s] Pronunciation Key

–noun, plural -lus·es.

1.	Pharmacology, Veterinary Medicine. a round mass of medicinal material, larger than an ordinary pill. Abbreviation: bol.

2.	a soft, roundish mass or lump, esp. of chewed food.

bole².

[Origin: 1595–1605; < LL bōlus clod of earth < Gk bôlos clod, lump; see bole²

]

Dictionary.com Unabridged (v 1.1)
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2006.

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Bolus

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American Heritage Dictionary - Cite This Source - Share This

bo·lus Audio Help (bō'ləs) Pronunciation Key
n. pl. bo·lus·es

A round mass: "A dense bolus of trapped dolphins fills the frame" (Kenneth Browser).
1. A single, relatively large quantity of a substance, such as a dose of a drug, intended for therapeutic use and taken orally.
2. A concentrated mass of a substance administered intravenously for diagnostic or therapeutic purposes.
A soft mass of chewed food within the mouth or alimentary canal.

[Medieval Latin bōlus, from Greek bōlos, lump of earth.]

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The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2006 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.

WordNet - Cite This Source - Share This

bolus
noun
1.	a small round soft mass (as of chewed food)
2.	a large pill; used especially in veterinary medicine

Webster's Revised Unabridged Dictionary - Cite This Source - Share This

Bolus

Bole\, n. [Gr. ? a clod or lump of earth: cf. F. bol, and also L. bolus morsel. Cf. Bolus.]

1. Any one of several varieties of friable earthy clay, usually colored more or less strongly red by oxide of iron, and used to color and adulterate various substances. It was formerly used in medicine. It is composed essentially of hydrous silicates of alumina, or more rarely of magnesia. See Clay, and Terra alba.

2. A bolus; a dose. --Coleridge.

Armenian bole. See under Armenian.

Bole Armoniac, or Armoniak, Armenian bole. [Obs.] --Chaucer.

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