There are 2 main definitions of Rn in English:

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Rn 1

Line breaks: Rn

symbol

The chemical element radon.
Definition of Rn in:
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There are 2 main definitions of Rn in English:

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RN 2 Line breaks: RN

abbreviation

1Niger (international vehicle registration).
[From French République du Niger]
2(Chiefly in North America) Registered Nurse.
3(In the UK) Royal Navy.
Definition of Rn in:
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