Rn
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Symbol, Chemistry.
radon.
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QUIZ YOURSELF ON "WAS" VS. "WERE"!
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Question 1 of 7
“Was” is used for the indicative past tense of “to be,” and “were” is only used for the subjunctive past tense.
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Words nearby Rn
Definition for Rn (2 of 2)
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
Example sentences from the Web for Rn
British Dictionary definitions for Rn (1 of 2)
Rn
the chemical symbol for
radon
British Dictionary definitions for Rn (2 of 2)
RN
abbreviation for
(in Canada) Registered Nurse
Royal Navy
symbol for
Niger (international car registration)
Word Origin for RN
(sense 3) From R(epublic of) N(iger)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for Rn (1 of 2)
Rn
The symbol for the elementradon
Medical definitions for Rn (2 of 2)
RN
abbr.
registered nurse
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Scientific definitions for Rn
Rn
The symbol for radon.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.