(mathematics, topology, geometry) Any of a group of characteristic classes associated with complex vector bundles, with applications in physics, string theory, etc.

plural of Chern class

(mathematics) A three-dimensional topological quantum field theory of Schwarz type, with applications in condensed-matter physics and quantum computing.

(by extension) A major nuclear-energy accident.

A partially abandoned city and ghost town in northern Ukraine, known as the site of a nuclear disaster.

A port city, the administrative centre of Chernihiv Raion, Chernihiv Oblast, in northern Ukraine, on the Desna River; administrative centre of the raion and the oblast.

A city, the administrative centre of Chernivtsi Oblast, in the Bukovyna region, Ukraine, on the Prut river. / An oblast in southwestern Ukraine.

A gloomy genre of Russian horror.

(soil science) Being or containing chernozem.

(mineralogy) A technogenic crystalline zirconium silicate containing uranium as a solid solution, discovered in the corium produced by the Chernobyl nuclear accident.