Definitions for bacillusbəˈsɪl əs; -ˈsɪl aɪ

This page provides all possible meanings and translations of the word bacillus

Random House Webster's College Dictionary

ba•cil•lusbəˈsɪl əs; -ˈsɪl aɪ(n.)(pl.)-cil•li

  1. any rod-shaped or cylindrical bacterium of the genus Bacillus, comprising spore-producing bacteria.

    Category: Microbiology

  2. (formerly) any bacterium.

    Category: Microbiology

Origin of bacillus:

1880–85; < LL, var. of L bacillum, dim. of baculum staff, walking stick

Princeton's WordNet

  1. bacillus, B(noun)

    aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil


  1. bacillus(Noun)

    Any of various rod-shaped, spore-forming aerobic bacteria in the genus Bacillus, some of which cause disease.

  2. Origin: From bacillus.

Webster Dictionary

  1. Bacillus(noun)

    a variety of bacterium; a microscopic, rod-shaped vegetable organism


  1. Bacillus

    Bacillus is a genus of Gram-positive, rod-shaped bacteria and a member of the phylum Firmicutes. Bacillus species can be obligate aerobes or facultative anaerobes, and test positive for the enzyme catalase. Ubiquitous in nature, Bacillus includes both free-living and pathogenic species. Under stressful environmental conditions, the cells produce oval endospores that can stay dormant for extended periods. These characteristics originally defined the genus, but not all such species are closely related, and many have been moved to other genera.

U.S. National Library of Medicine

  1. Bacillus

    A genus of BACILLACEAE that are spore-forming, rod-shaped cells. Most species are saprophytic soil forms with only a few species being pathogenic.


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