Word.ws English Dictionary

Plural of staphylococcus

irregular plural

The plural of staphylococcus is staphylococci.

Forms of staphylococcus

Singularstaphylococcus /ˌstæfələˈkɔkəs/
Pluralstaphylococci /ˌstæfələˈkɔki/
Countablecountable

Staphylococci in a sentence

  • This Scottish bacteriologist accidentally discovered the antibiotic penicillin after bacteria-killing fungus formed on staphylococci cultures he had left unattended.2012, The Onion Book of Known Knowledge, page 127

Meaning of staphylococcus

  1. noun A spherical gram-positive parasitic bacterium of the genus Staphylococcus, causing blisters, septicemia, and other infections.

Full definition of staphylococcus

Nouns ending in -us: plural -i

Questions about the plural of staphylococcus

What is the plural of staphylococcus?
The plural of staphylococcus is staphylococci.
Is staphylococcus countable?
Staphylococcus is a countable noun.

Source and license

Adapted from Wiktionary: staphylococcus (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

Last updated:

Cite this page: “Plural of staphylococcus.” Word.ws, https://word.ws/plural/staphylococcus. Based on Wiktionary, CC BY-SA 4.0.