[uhn-uh n-pen-tee-uh m]

noun Chemistry, Physics.

a superheavy, synthetic, radioactive element with a short half-life. Symbol: Uup; atomic number: 115.

Nearby words

  1. untypical,
  2. ununbium,
  3. ununhexium,
  4. ununnilium,
  5. ununoctium,
  6. ununquadium,
  7. ununseptium,
  8. ununtrium,
  9. unununium,
  10. unusable

Also called element 115.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for ununpentium




See element 115.
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