Rn

symbol

Definition of Rn

  1. radon


1903

First Known Use of rn

1903


2

RN

abbreviation

Definition of RN

  1. Royal Navy


Medical Dictionary

Rn

symbol

Medical Definition of Rn

  1. radon


RN

play
noun \ˈär-ˈen\

Medical Definition of RN


Learn More about rn


Seen and Heard

What made you want to look up Rn? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a Mesopotamian temple tower

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • alphabet-magnets
  • Which is the correct spelling?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ