r
NOUN
/ɑr/
1 LETTERS · STARTS WITH R
r is a valid 1-letter word worth 1 points in Scrabble and 1 points in Words with Friends.
SCRABBLE
WORDS WITH FRIENDS
R1
1 =1 PTS
DOUBLE WORD → 2TRIPLE WORD → 3
MEANING
What does r mean?
NOUN · 4 SENSES
1
A unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air.
SYNONYMS
BROADER
2
(physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole.
SYNONYMS
BROADER
3
The length of a line segment between the center and circumference of a circle or sphere.
SYNONYMS
BROADER
NARROWER
4
The 18th letter of the Roman alphabet.
BROADER
AT THE BOARD
Anagrams of r
SAME TILES, DIFFERENT WORDS
Every anagram above uses exactly the same letters — tap one to see its meaning and score.