from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun An electron ejected from matter by ionizing radiation.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics An
electron ejectedby recoilwhen a rapidly moving alpha particleor other charged particlepasses through matter.
- noun physics A secondary
ionizing particleejected by recoil when a primary particle passes through matter.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun an electron ejected from matter by ionizing radiation
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