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Meaning of actino-uranium in English:

actino-uranium

Pronunciation /ˌaktɪnə(ʊ)jʊˈreɪnɪəm/

noun

historical Chemistry Physics

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

    A higher mass number was at first inferred for this isotope.

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.