Rn
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Rn
The symbol for radon.
RN
abbr.
1. registered nurse
2. Royal Navy
Rn
the chemical symbol for
(Elements & Compounds) radon
RN
abbreviation for
1. (Professions) (in Canada) Registered Nurse
2. (Nautical Terms) Royal Navy
symbol for
(Automotive Engineering) Niger (international car registration)
[(sense 3): from R(epublic of) N(iger)]
Rn
Chem. Symbol.
radon.
RN
or R.N.,
1. registered nurse.
2. Brit. Royal Navy.
Rn
The symbol for radon.
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| Noun | 1. |  Rn - 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 healthchemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter |
| 2. | RN - a graduate nurse who has passed examinations for registration nurse - one skilled in caring for young children or the sick (usually under the supervision of a physician) nurse-midwife - a registered nurse who has received special training as a midwife nurse clinician, nurse practitioner, NP - a registered nurse who has received special training and can perform many of the duties of a physician |