1mass noun Impure uranium oxide obtained during processing of uranium ore.‘The natural uranium and yellowcake stored at Tuwaitha was not nuclear bomb grade material.’
- ‘The process of uranium enrichment is incredibly difficult and energy intensive. Thousands of tons of uranium ore should be processed into powder form called yellowcake.’
- ‘Included in those facilities, say analysts, is a process line for turning uranium ore into yellowcake, the first step in the process towards enriching it into weapons-grade material.’
- ‘The problem of uranium-contaminated groundwater dates back to the Cold War when mines and mills throughout the United States produced millions of tons of uranium oxide, or yellowcake, to build nuclear bombs.’
2yellow cakeUS A vanilla-flavoured sponge cake having a pale yellow colour from the egg yolks and butter in the recipe.
- ‘spread icing over one layer of a yellow cake’
1940s so named because the oxide is obtained as a yellow precipitate.