obsidian

• Существительное, обозначающее темное природное вулканическое стекло, образующееся при быстром охлаждении лавы, исторически часто использовавшееся для изготовления инструментов и декоративных предметов.

A noun referring to a dark, natural volcanic glass formed from rapidly cooled lava, often used historically for tools and decorative objects.

uncountable

1. Volcanic glassC1formal

   A dark, natural glass formed when lava cools rapidly without crystallizing, often used in tools and ornaments.

   Вулканическое стекло

   • Obsidian was used by ancient cultures to make sharp arrowheads.
   • The volcanic rock obsidian has a smooth, glassy texture.
   • Collectors prize obsidian for its deep black color and conchoidal fracture.

   Synonymsvolcanic glass