from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The nucleus of a heavy element. When such nuclei are caused to collide at high velocities, new elements are created.
- n. A charged microscopic particle that forms when an ion attaches to a dust mote or similar object.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An ionized atom that is usually heavier than helium.
Sorry, no etymologies found.