Definitions for bacillusbəˈsɪl əs; -ˈsɪl aɪ
Random House Webster's College Dictionary
ba•cil•lusbəˈsɪl əs; -ˈsɪl aɪ(n.)(pl.)-cil•li
any rod-shaped or cylindrical bacterium of the genus Bacillus, comprising spore-producing bacteria.
(formerly) any bacterium.
Origin of bacillus:
1880–85; < LL, var. of L bacillum, dim. of baculum staff, walking stick
aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
Any of various rod-shaped, spore-forming aerobic bacteria in the genus Bacillus, some of which cause disease.
Origin: From bacillus.
a variety of bacterium; a microscopic, rod-shaped vegetable organism
U.S. National Library of Medicine
A genus of BACILLACEAE that are spore-forming, rod-shaped cells. Most species are saprophytic soil forms with only a few species being pathogenic.