noun · 2 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:/ˌstɹɛptəˈkɒkəs/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/ˌstɹɛptəˈkɑkəs/
rhymes with -ɒkəs
CMU ARPABET:S T R EH2 P T AH0 K AO1 K AH0 S
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A spherical, gram-positive bacterium of the genus Streptococcus. Although commonly found benignly in the human mouth and gut, and though many species are non-pathogenic, other species can cause diseases including strep throat and more serious conditions.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: strep, strepto
Antonyms: none provided
2
noun
Meaning 2
spherical Gram-positive bacteria occurring in pairs or chains; cause e.g. scarlet fever and tonsillitis
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Morphologically a compound of strepto- + -coccus. They grow in chains or pairs, thus the name — from Ancient Greek στρεπτός (streptós, “twisted, pliant”), like a chain. Compare the genus name Streptococcus.
Across languages
Translations
25 source translations are retained for this English entry.
Catalan:
estreptococ
— bacterium
Chinese Mandarin:
鏈球菌 /链球菌
(liànqiújūn)
— bacterium