orphan source
noun1
A self-contained radioactive source that is no longer under regulatory control, for example because it has been abandoned or misplaced.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
noun
A self-contained radioactive source that is no longer under regulatory control, for example because it has been abandoned or misplaced.
Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.
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