Vakuumröhre

== German == === Etymology === Vakuum +‎ Röhre === Pronunciation === === Noun === Vakuumröhre f (genitive Vakuumröhre, plural Vakuumröhren) vacuum tube, valve (thermoelectric device) Synonym: Elektronenröhre ==== Declension ==== === Further reading === “Vakuumröhre” in Duden online “Vakuumröhre”, in Digitales Wörterbuch der deutschen Sprache‎[1] (in German)