R

R is the eighteenth (number 18) letter in the English alphabet.

 Meanings for R 
 On calendars, R is sometimes used as an short letter for Thursday instead of T, to avoid mistakes with Tuesday.
 In chess, R is a notation symbol for the rook piece.
 In geometry, R is most times a variable for the radius of a circle.
 In navigation, R means the direction "right."
 In movies, R means "restricted."
 In Wheel of Fortune, R is one of the six letters given to any contestant participating in the "Bonus Round."

Related pages
 R (programming language)

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