Wiktionary
n. (context geology English) A substance formed by meteorite impact, a component of the tektites found across central Europe.
Wikipedia
Moldavite is an olive-green or dull greenish vitreous substance possibly formed by a meteorite impact in Southern Germany ( Nördlinger Ries), which would make it one kind of tektite. They were introduced to the scientific public for the first time in 1786 as “chrysolites” from Týn nad Vltavou in a lecture by professor Josef Mayer of Prague University, read at a meeting of the Bohemian Scientific Society (Mayer 1788). Zippe (1836) first used the term “moldavite” derived from the town of Moldauthein - now in Bohemia (the Czech Republic), from where the first described pieces came.
Usage examples of "moldavite".
Both K/Ar and fissiontrack testing of the Moldavite tektites (usually considered of identical age with the Ries) yield—alas!