Dictionary

bacillus

noun ba·cil·lus \bə-ˈsi-ləs\

: a straight rod-shaped bacterium that requires oxygen for growth; also : a bacterium that causes disease

plural ba·cil·li\-ˌalso -lē\

Full Definition of BACILLUS

1
:  any of a genus (Bacillus) of rod-shaped gram-positive usually aerobic bacteria producing endospores and including many saprophytes and some parasites (as B. anthracis of anthrax); broadly :  a straight rod-shaped bacterium
2
:  bacterium; especially :  a disease-producing bacterium

Origin of BACILLUS

New Latin, from Medieval Latin, small staff, rod, diminutive of Latin baculus staff, alteration of baculum
First Known Use: 1868

Rhymes with BACILLUS

bacillus

noun ba·cil·lus \bə-ˈsil-əs\   (Medical Dictionary)
plural ba·cil·li \-ˌī also -ē\

Medical Definition of BACILLUS

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

Browse

Next Word in the Dictionary: BaciroaPrevious Word in the Dictionary: bacilliteAll Words Near: bacillus
April 01, 2015
diapause Hear it
a period of physiological dormancy
Take a 3-minute break and test your skills!
How to use a word that (literally) drives some people nuts.
Test your vocab with our fun, fast game
Ailurophobia, and 9 other unusual fears