ionium Hear it!

ionium Definition

io·ni·um (ī ō′nē əm)

noun

a radioactive isotope of thorium having a mass number of 230 and a half-life of 8 × 10 years

Etymology: ion + -ium

Browse dictionary entries near ionium

  1. ‹ ionic bond
  2. ‹ ionic
  3. ‹ Ionian Sea
  4. ‹ Ionian Islands
  5. ‹ Ionian
  6. ‹ Ionia
  7. ‹ Ionesco, Euge' n e
  8. ‹ Ionesco
  9. ‹ -ion
  10. ‹ ion exchange
  1. ionization chamber ›
  2. ionize ›
  3. ionogen ›
  4. ionone ›
  5. ionophore ›
  6. ionosonde ›
  7. ionosphere ›
  8. iontophoresis ›
  9. IOOF ›
  10. IOR ›