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."

reconstruction of the Proto-Sinaitic resh glyph.
Phoenician letter res
Glyph shape found in ancient Greek epigraphy (Rho).
Half r (also round r, rotunda r); Unicode  (xF20E, Private Use Area) from the font en:Leeds Uni; created with en:Gimp. --- J. 'mach' wust • ˈkːlaːwːr̩ 12:08, 22 October 2005 (UTC)
reconstruction of the Proto-Sinaitic resh glyph.
PhoenicianR
One epigraphic letter shape of ancient Greek letter Rho.
Etruscan R variant
Latin capital letter R in the style of the Roman Capitalis monumentalis, using the font Trajan Pro
The word prognatus as written on the Sarcophagus of Lucius Cornelius Scipio Barbatus (280 BC) reveals the full development of the Latin ⟨R⟩ by that time; the letter ⟨P⟩ at the same time still retains its archaic shape distinguishing it from Greek or Old Italic rho.
Alveolartrill
An alveolar approximant: [ɹa aɹa].
Alveolartap
Pronunciation of a voiced retroflex fricative, [ʐ] between two [a]s; [ʐa aʐa] by 44-year-old cis male speaker raised in Stockholm and Moscow.
Pronunciation of a retroflex approximant, [ɻ]: [ɻa aɻa].
Retroflexflap
Uvulartrill
Voiceduvularfricative

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