Words related to bacteria

archaebacteria (n.)
1977, from archaeo- "ancient" + bacteria. Singular is archaebacterium.
bacillus (n.)
1877, medical Latin, from Late Latin bacillus "wand," literally "little staff," diminutive of baculum "a stick, staff, walking stick," from PIE *bak- "staff" (also source of Greek bakterion; see bacteria) + instrumentive suffix -culo. Introduced as a term in bacteriology 1853 by German botanist Ferdinand Cohn (1828-1898).
bacterial (adj.)
"of or pertaining to bacteria," 1869, from bacteria + -al (1).
bacteriology (n.)
"scientific study of microbes," 1884, from German; see bacteria + -ology. Related: Bacteriological (1886); bacteriologist. Bacteriological warfare is from 1924.
bacteriophage (n.)

"virus that parasitizes a bacterium by infecting it and reproducing inside it," 1921, from French bactériophage (1917), from bacterio-, combining form of bacteria, + -phage.

bacterium (n.)
c. 1848, singular of bacteria (q.v.).
eubacteria (n.)
singular eubacterium, 1939, coined in German 1930; see eu-, here meaning "good," + bacteria. Classically, as an adverb, eu should form compounds only with verbs.