Definition of actino-uranium in English:

actino-uranium

noun

Physics historical Chemistry
  • The (fissile) isotope of uranium of mass number 235.

Origin

Early 20th century; earliest use found in Science. From actin- + -o- + uranium, after French actinuranium; so called because actinium results from the radioactive decay of this isotope.

Pronunciation:

actino-uranium

/ˌaktɪnə(ʊ)jʊˈreɪnɪəm/