from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An artificially produced radioactive element with atomic number 113 whose most stable isotope has mass number 284 and a half-life of approximately 0.5 seconds. cross-reference: Periodic Table.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a radioactive transuranic element
Sorry, no etymologies found.
Sorry, no example sentences found.