different between bacterium vs barnase

English

Etymology

From New Latin bact?rium, from Ancient Greek ????????? (bakt?rion, “small staff”), from ???????? (bakt?ría).

Pronunciation

• IPA^(key): /bæk?t???.??m/

Noun

bacterium (plural bacteria)

1. (microbiology) A single celled organism with cell walls but no nucleus or organelles.

Usage notes

• In most formal writing, bacterium is the singular form of the noun, and bacteria the plural form. This is in accord with the word's Latin etymology. However, in ordinary speech, some speakers use bacteria as a singular, with plural either bacteria or bacterias. This is usually considered nonstandard.

Hypernyms

• prokaryote

Hyponyms

• See also Thesaurus:bacterium

Derived terms

• eubacterium
• archaebacterium / archebacterium
• urobacterium
• bacterial

Translations

Further reading

• bacterium on Wikipedia.Wikipedia

See also

• bacillus

Latin

Etymology

From Ancient Greek ????????? (bakt?rion, “small staff”), from ???????? (bakt?ría).

Pronunciation

• (Classical) IPA^(key): /bak?te?.ri.um/, [bäk?t?e??i???]
• (Ecclesiastical) IPA^(key): /bak?te.ri.um/, [b?k?t????ium]

Noun

bact?rium n (genitive bact?ri? or bact?r?); second declension

1. (microbiology) bacterium

Declension

Second-declension noun (neuter).

¹Found in older Latin (until the Augustan Age).

References

• bacterium in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)

English

Etymology

Short for bacterial ribonuclease.

Noun

barnase (countable and uncountable, plural barnases)

1. (biochemistry) A small protein, produced by the bacterium Bacillus amyloliquefaciens and others, that has ribonuclease activity