bacillus
noun
ba·cil·lus
bə-ˈsi-ləs 
plural bacilli
bə-ˈsi-ˌlī
also -lē
1
: any of a genus (Bacillus) of rod-shaped gram-positive usually aerobic bacteria producing endospores and including many saprophytes and some parasites (such as B. anthracis of anthrax)
broadly
: a straight rod-shaped bacterium
2
: bacterium
especially
: a disease-producing bacterium
Examples of bacillus in a Sentence
Recent Examples on the Web
Another option that is also safe and environmentally friendly is a product containing BT, bacillus thuringiensis.
—
Chris McKeown, The Enquirer, 10 Aug. 2024
Gut Guru Gummies contain up to 2 billion CFU of bacillus coagulans because good bacteria is key for a balanced gut.
—Amber Smith, Discover Magazine, 29 Oct. 2022
Key ingredients: Glyceryl glucoside, hydrolyzed yeast extract, bacillus ferment, polyglucuronic acid Size: 0.67 Fl.
—Iman Balagam, harpersbazaar.com, 6 May 2023
Recent analyses of global epidemiological data by several teams in the United States and in Israel found that in places with higher rates of bacillus Calmette-Guérin (BCG) tuberculosis vaccination, the spread of COVID-19 is slower and pandemic death rates are lower.
—Quanta Magazine, 14 Sep. 2020
See all Example Sentences for bacillus 
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Chris McKeown, The Enquirer, 10 Aug. 2024
Gut Guru Gummies contain up to 2 billion CFU of bacillus coagulans because good bacteria is key for a balanced gut.
—Amber Smith, Discover Magazine, 29 Oct. 2022
Key ingredients: Glyceryl glucoside, hydrolyzed yeast extract, bacillus ferment, polyglucuronic acid Size: 0.67 Fl.
—Iman Balagam, harpersbazaar.com, 6 May 2023
Recent analyses of global epidemiological data by several teams in the United States and in Israel found that in places with higher rates of bacillus Calmette-Guérin (BCG) tuberculosis vaccination, the spread of COVID-19 is slower and pandemic death rates are lower.
—Quanta Magazine, 14 Sep. 2020
See all Example Sentences for bacillus
Dictionary Entries Near bacillus
Cite this Entry
“Bacillus.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bacillus. Accessed 17 Nov. 2024.
Copy CitationKids Definition
bacillus
noun
ba·cil·lus
bə-ˈsil-əs
plural bacilli
-ˈsil-ˌī
also -ˈsil-ē
: any of numerous straight rod-shaped bacteria that require oxygen for growth
also
: a disease-producing bacterium
Medical Definition
bacillus
noun
ba·cil·lus
bə-ˈsil-əs
plural bacilli
-ˌī also -ē
1
a
capitalized
: a genus of rod-shaped gram-positive endospore-producing usually aerobic bacteria of the family Bacillaceae that include many saprophytes and some parasites (as B. anthracis of anthrax)
b
: any bacterium of the genus Bacillus
broadly
: a straight rod-shaped bacterium
2
: bacterium
especially
: a disease-producing bacterium
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