Meaning: n. 1. 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 2. a graduate nurse who has passed examinations for registration.
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31) The charcoal coil monitor for radon 222 Rn in air is calculated and analysed.
32) The religion most prevalent in our nor the rn colonies is a refinement on the principles of resistance:it is the dissidence of dissentEdmund Burke.