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Rn

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Symbol, Chemistry.

radon.

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“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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Definition for Rn (2 of 2)

R.N.

abbreviation

British. Royal Navy.
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.
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