in a process involving elementary particles, the total number of leptons minus the total number of antileptons.
(physics) a quantum number describing the behaviour of elementary particles, equal to the number of leptons present minus the number of antileptons. It is thought to be conserved in all processes l
[lep-tuh-fos] /ˈlɛp təˌfɒs/ noun, Chemistry. 1. a solid compound, C 13 H 10 BrCl 2 O 2 PS, used as a nonsystemic insecticide for food crops and lawn grass.
[lep-erd] /ˈlɛp ərd/ noun 1. a large, spotted Asian or African carnivore, Panthera pardus, of the cat family, usually tawny with black markings; the Old World panther: all leopard populations are threatened or endangered. 2. the fur or pelt of this animal. 3. any of various related cats resembling this animal. 4. Heraldry. a lion […]
- Leon trotsky
[trot-skee; Russian trawt-skyee] /ˈtrɒt ski; Russian ˈtrɔt skyi/ noun 1. Leon (Lev or Leib, Davidovich Bronstein) 1879–1940, Russian revolutionary and writer: minister of war 1918–25. /ˈtrɒtskɪ/ noun 1. Leon, original name Lev Davidovich Bronstein. 1879–1940, Russian revolutionary and Communist theorist. He was a leader of the November Revolution (1917) and, as commissar of foreign affairs […]
[lee-on-tuh-vich] /liˈɒn tə vɪtʃ/ noun 1. Eugenie Konstantin [kon-stuh n-teen] /ˈkɒn stənˌtin/ (Show IPA), 1900–1993, U.S. actress, director, and playwright, born in Russia.