yellowcake

or yel·low cake

[ yel-oh-keyk ]
/ ˈyɛl oʊˌkeɪk /

noun

a processed oxide of uranium, U3O8, extracted and concentrated from uranium ore: used as the raw material for commercial nuclear materials, especially fuel elements in nuclear reactors.

Origin of yellowcake

First recorded in 1945–50; yellow + cake

British Dictionary definitions for yellow cake

yellow cake

noun

informal semirefined uranium ore