Definition of Rn
(Entry 1 of 3)
radon
RN
noun
\ ˌär-ˈen
\
\
Definition of RN (Entry 2 of 3)
RN
abbreviationDefinition of RN (Entry 3 of 3)
Royal Navy
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“Rn.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Rn. Accessed 13 Jun. 2021.
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The first known use of Rn was in 1903
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