Meaning

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

originEtymology 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 Ancient Greek -κός (-kós) Ancient Greek -ικός (-ikós) Ancient Greek κυκλῐκός (kuklĭkós)bor. Classical Latin cyclicuslbor. Middle…

Etymology from Wiktionary, CC BY-SA 3.0