a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
Type | Words |
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Synonyms | atomic number 86, radon |
Type of | argonon, chemical element, element, inert gas, noble gas |
Type | Words |
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Synonyms | registered nurse |
Type of | nurse |
Has types | nurse practitioner, np, nurse-midwife, nurse clinician |
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