Standard Lemma guide
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.
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noun
A broad-spectrum antibiotic C3H6N2O2 produced by an actinomycete (Streptomyces orchidaceus) and used especially in the treatment of tuberculosis.
Definition source: English Wiktionary via Wiktextract
Usage: countable, uncountable
Topics: medicine, pharmacology, sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
noun
an antibiotic that is especially active against the tubercle bacillus
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
Broader terms: antibiotic, antibiotic drug
History
Etymology tree Proto-Indo-European *kwel- Proto-Indo-European *kwékwlos Ancient Greek κῠ́κλος (kŭ́klos)der. Late Latin cyclusbor. Middle English cicle English cycle ▲ 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 cyclo- Old Chinese 絲 (*sə)der.? Ancient Greek σήρ (sḗr) ▲ Ancient Greek -ῐκός (-ĭkós) Ancient Greek σηρῐκός (sērĭkós)bor. Latin sēricusder. English serine English cycloserine From cyclo- + serine.
