Standard Lemma guide

tetracycline

noun · 3 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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  • /ˌtɛ.tɹəˈsaɪ.kliːn/

1

noun

Meaning 1

A yellow crystalline broad-spectrum antibiotic C22H24N2O8 produced by streptomyces or synthetically.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: medicine, pharmacology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

Any of a large group of antibiotics with the same general structure derived from tetracene with many hydroxyl and other groups.

Definition source: English Wiktionary via Wiktextract

Usage: countable

Topics: medicine, pharmacology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

an antibiotic (trade name Achromycin) derived from microorganisms of the genus Streptomyces and used broadly to treat infections

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: Achromycin

Antonyms: none provided

Broader terms: antibacterial, antibacterial drug, bactericide

Narrower terms: demeclocycline hydrochloride, Declomycin, minocycline, Minocin

History

Etymology

Etymology tree Proto-Indo-European *kwetwóres Proto-Hellenic *kwétwores Ancient Greek τέσσᾰρες (téssăres) Ancient Greek τετρᾰ- (tetră-)bor. English tetra- Proto-Indo-European *kwel- Proto-Indo-European *kwékwlos Ancient Greek κύκλος (kúklos) Proto-Indo-European *-kos Proto-Hellenic *-kos Ancient Greek -κός (-kós) Ancient Greek -ικός (-ikós) Ancient Greek κυκλῐκός (kuklĭkós)bor. Classical Latin cyclicuslbor. Middle French cyclique French cycliquebor. ▲ Classical Latin cyclicusbor. English cyclic English tetracyclic Proto-Indo-European *-nós Proto-Indo-European *-iHnos Proto-Italic *-īnos Latin -īnusder. Old French -inbor. Middle English -in English -ine English tetracycline From tetracyclic + -ine.

Across languages

Translations

9 source translations are retained for this English entry.

  • Finnish: tetrasykliini — antibiotic produced by bacteria
  • French: tétracycline — antibiotic produced by bacteria
  • Greek: τετρακυκλίνη (tetrakyklíni) — antibiotic produced by bacteria
  • Hungarian: tetraciklin — antibiotic produced by bacteria
  • Russian: тетрацикли́н (tetraciklín) — antibiotic produced by bacteria
  • French: tétracycline — antibiotic with the same general structure
  • Greek: τετρακυκλίνη (tetrakyklíni) — antibiotic with the same general structure
  • Hungarian: tetraciklin — antibiotic with the same general structure
  • Russian: тетрацикли́н (tetraciklín) — antibiotic with the same general structure
Real reading context

tetracycline in complete knowledge articles