r Hear it!

r1 definition

r or R (är)

noun pl. R's, r's

  1. the eighteenth letter of the English alphabet: from the Greek rho, a borrowing from the Phoenician
  2. any of the speech sounds that this letter represents, as, in English, the (r) of rude
  3. a type or impression for r or R
  4. the eighteenth in a sequence or group
  5. an object shaped like

adjective

  1. of r or R
  2. eighteenth in a sequence or group
  3. shaped like
r Idioms

the three R's

r2 definition

r

  1. radius
  2. range
  3. rare
  4. received
  5. Printing recto
  6. retired
  7. right
  8. rod(s)
  9. roentgen(s)
  10. Card Games rubber
  11. Baseball run(s)
R1 definition

☆ R (är)

a film rating meaning “restricted”: it indicates that persons under seventeen may be admitted to the film only when accompanied by a parent or adult guardian
R2 definition

R

  1. Etymology: L Rex

    king

  2. Etymology: L Regina

    queen
  3. Rabbi
  4. Chem. radical, esp. organic radical
  5. Rankine
  6. Math. ratio
  7. Reaumur
  8. registered (trademark): symbol, ®
  9. Republican
  10. Elec. resistance
  11. right
  12. River
  13. Road
  14. roentgen(s)
  15. Chess rook
  16. route
  17. ruble
  18. Baseball run(s)
  19. rupee

  20. Etymology: L recipe

    Pharmacy take: also ℞
R3 definition

R

molar gas constant

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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