staphylococcus

American  

[staf-uh-luh-kok-uhs] / ˌstæf ə ləˈkɒk əs /

noun

Bacteriology.

plural

staphylococci

1. any of several spherical bacteria of the genus Staphylococcus, occurring in pairs, tetrads, and irregular clusters, certain species of which, as S. aureus, can be pathogenic for humans.

---

staphylococcus British  

/ ˌstæfɪləʊˈkɒkəs, ˌstæfɪləʊˈkɒkɪk, ˌstæfɪləʊˈkɒkəl, -ˈkɒksɪk /

noun

1. Often shortened to: staph.  any spherical Gram-positive bacterium of the genus Staphylococcus , typically occurring in clusters and including many pathogenic species, causing boils, infection in wounds, and septicaemia: family Micrococcaceae

---

staphylococcus Scientific  

/ stăf′ə-lō-kŏk′əs /

plural

staphylococci

1. Any of various bacteria of the genus Staphylococcus that are gram-positive cocci and are normally found on the skin and mucous membranes of warm-blooded animals. Pathogenic strains such as S. aureus commonly cause infections of the skin, bones, lungs and other organs. Some staphylococcal disease, such as food poisoning, is caused by a toxin produced by the bacteria.

---

staphylococcus Cultural  

1. A category of bacteria that can cause boils, blood poisoning, and other serious infections.

---

Other Word Forms

• staphylococcal adjective
• staphylococcic adjective

Etymology

Origin of staphylococcus

From New Latin, dating back to 1885–90; staphylo-, coccus

Example Sentences

According to Public Health Wales, Staph infection is a bacterial infection caused by staphylococcus - a germ that lives in the nose of one in three people.

From BBC • Mar. 28, 2026

The lack of pain in leishmaniasis lesions has puzzled scientists for years, especially when similar blisters caused by conditions like chicken pox, staphylococcus infections or the herpes virus are itchy, oozy and sore.

From Science Daily • Nov. 30, 2023

The letter said records that the group obtained showed instances of pathogens, such as antibiotic-resistant staphylococcus and herpes B virus, that may have been transported without proper containment measures.

From Reuters • Feb. 9, 2023

Within a week, he was dead; the tiny injury to 16-year-old Calvin Coolidge Jr. had become infected with staphylococcus bacteria.

From Washington Post • Nov. 23, 2022

The streptococcus has less capacity of liquefying the tissues than the staphylococcus, so that pus formation takes place more slowly.

From Manual of Surgery Volume First: General Surgery. Sixth Edition. by Thomson, Alexis