tektite

From Ancient Greek τηκτός (tēktós, “molten”), from τήκειν (tḗkein, “to melt”).

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tektite (plural tektites)

1. A small, round, dark glassy object, composed of silicates, formed by the rapid cooling of molten ejecta from meteorite impacts.

• lechatelierite

• desert glass

• “tektite”, in OneLook Dictionary Search.