bolus

noun
bo·​lus | \ ˈbō-ləs How to pronounce bolus (audio) \
plural boluses

Definition of bolus

1 : a rounded mass: such as
a : a large pill
b : a soft mass of chewed food
2 medical
a : a dose of a substance (such as a drug) given intravenously
b : a large dose of a substance given by injection for the purpose of rapidly achieving the needed therapeutic concentration in the bloodstream

Examples of bolus in a Sentence

Recent Examples on the Web This quick test saves him from wasting a bolus of precious (seriously) sperm on a millipede inamorata from the wrong species. Emily Willingham, Wired, "Does a Millipede Have a Penis? Well ... Define 'Penis'," 22 Sep. 2020 Audi's brash little bolus is a design statement that eclipses the Bimmer and anything else in this class. Frank Markus, Car and Driver, "Tested: 2000 Audi TT Goes All-In on Style," 1 June 2020 In a worrying sign for Antarctic wildlife, Borowicz has started finding bits of plastic in bird boluses, lumps of undigested food that birds regurgitate as part of the feeding process. Time, "Plastics Still Manage to Reach the End of the World. One Organization Is Trying to Make Sure Polluters Are Held Responsible," 9 Apr. 2020 Then again, the whole interconnected extent of the bolus (in the German original) makes it a natural for the Internet and hypertext. Michael Hofmann, The New York Review of Books, "Musil’s Infinities," 10 Mar. 2020 Other software programs include StentViz to get better visualization of stents; InnovaChase, which can follow contrast bolus at a rate of 5 frames per second; and Innova Vision, for live 3D rotational images at a single click. Sponsored Content With Emergency Hospital Systems, Houston Chronicle, "New Cath Lab Brings Cutting-edge Cardiac Care to Cleveland, Texas Residents," 12 Aug. 2019 In manual mode, there’s what’s known as a dual-wave bolus that allows you to fine-tune doses to reflect different foods or circumstances. David Lazarus, latimes.com, "Cutting-edge tech makes diabetes management easier (and less painful) than ever," 7 June 2018 But true mastery of the subject requires not only a big bolus of math and physics but a whopping expansion of one’s inner vision. Alan Hirshfeld, WSJ, "The Greatest Show on Earth," 11 Aug. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'bolus.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of bolus

1562, in the meaning defined at sense 1

History and Etymology for bolus

Late Latin, from Greek bōlos lump

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Time Traveler for bolus

Time Traveler

The first known use of bolus was in 1562

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Cite this Entry

“Bolus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bolus. Accessed 17 Jan. 2021.

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More Definitions for bolus

bolus

noun
bo·​lus | \ ˈbō-ləs How to pronounce bolus (audio) \
plural boluses

Medical Definition of bolus

1 : a rounded mass: as
a : a large pill
b : a soft mass of chewed food
2a : a dose of a substance (as a drug) given intravenously
b : a large dose of a substance given by injection for the purpose of rapidly achieving the needed therapeutic concentration in the bloodstream the patient receives a bolus dose to reach the minimum effective analgesic concentration— J. F. Camp subcutaneous injection of a premeal bolus of fast-acting insulin

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More from Merriam-Webster on bolus

Thesaurus: All synonyms and antonyms for bolus

Nglish: Translation of bolus for Spanish Speakers

Britannica.com: Encyclopedia article about bolus

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