Jena glass

== English == === Etymology === Calque of German Jenaer Glas. The glass was invented by Otto Schott in the city of Jena, Germany. === Noun === Jena glass (uncountable) A type of fine-quality borosilicate glass with high resistance to shock and heat, used in science, technology, and tableware. ==== Translations ==== === Further reading === “Jena glass”, in Merriam-Webster.com Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.