ac·tin·o·u·ra·ni·um 
(ăk-tĭnō-y-rānē-əm, ăk′tə-nō-)
(ăk-tĭnō-y-rānē-əm, ăk′tə-nō-)n.
The isotope of uranium with mass number 235, fissionable with slow neutrons.
[ACTIN(IUM) + URANIUM.]
- yellowfin tuna
- yellowhammer
- yellowish
- yellow jack
- yellow jacket
- yellow jasmine
- yellow jessamine
- yellow journalism
- Yellowknife
- yellowlegs
- yellow mustard
- yellowness
- yellow ocher
- yellow pages
- yellow perch
- yellow peril
- yellow pine
- yellow poplar
- Yellow River
- yellow-rumped warbler
- Yellow Sea
- yellow-shafted flicker
- yellow sheet
- yellow spot
- Yellowstone River