R, r

R, r

R, r [ahr] Examples noun, plural R’s or Rs, r’s or rs.

  1. the 18th letter of the English alphabet, a consonant.
  2. any spoken sound represented by the letter R or r, as in ran, carrot, or rhyme.
  3. something having the shape of R.
  4. a written or printed representation of the letter R or r.
  5. a device, as a printer’s type, for reproducing the letter R or r.
  6. three R’s.

r Ecology.

  1. the theoretical intrinsic rate of increase of a population, equivalent to the difference between the birth and death rates divided by the number of individuals in the population.

Also called Malthusian parameter. r

  1. radius.
  2. Commerce. registered(def 2).
  3. Electricity. resistance.
  4. Physics. roentgen(def 2).
  5. royal.
  6. ruble.
  7. plural rs, rupee.

R [ahr] verb

  1. Informal. are: Oysters R in season.

R Symbol.

  1. the 18th in order or in a series, or, when I is omitted, the 17th.
  2. (sometimes lowercase) the medieval Roman numeral for 80.Compare Roman numerals.
  3. Biochemistry. arginine.
  4. Physics. universal gas constant.
  5. registered trademark: written as superscript ® following a name registered with the U.S. Patent and Trademark Office.

R 1

  1. restricted: a rating assigned to a motion picture by the Motion Picture Association of America indicating that children under the age of 17 will not be admitted unless accompanied by an adult.Compare G(def 7), PG, PG-13, X(def 8).

Origin of R 1abbreviation for restricted R 2

  1. Chemistry. radical.
  2. Mathematics. ratio.
  3. regular: a man’s suit or coat size.
  4. Electricity. resistance.
  5. Theater. stage right.
  6. Physics. roentgen.
  7. Chess. rook.


  1. rabbi.
  2. railroad.
  3. railway.
  4. range.
  5. rare.
  6. Commerce. received.
  7. recipe.
  8. replacing.
  9. residence.
  10. right.
  11. rises.
  12. river.
  13. road.
  14. rod.
  15. royal.
  16. rubber.
  17. ruble.
  18. Baseball. run; runs.
  19. plural rs. rupee.

R. 1or R.

  1. (in prescriptions) take.

Origin of R. 1From the Latin word recipe R. 2

  1. rabbi.
  2. Radical.
  3. radius.
  4. railroad.
  5. railway.
  6. (in South Africa) rand; rands.
  7. Réaumur.
  8. rector.
  9. redactor.
  10. regina.
  11. Republican.
  12. response.
  13. rex.
  14. river.
  15. road.
  16. royal.
  17. ruble.
  18. rupee.
  19. Theater. stage right.

Examples from the Web for r Contemporary Examples of r

  • Now that Collette had left La Domaine, who was she a slave to, Collette or R?

    Dungeons and Genital Clamps: Inside a Legendary BDSM Chateau

    Ian Frisch

    December 20, 2014

  • After a stint with a replacement Head Mistress went sour, R seriously considered shutting down La Domaine for good.

    Dungeons and Genital Clamps: Inside a Legendary BDSM Chateau

    Ian Frisch

    December 20, 2014

  • “[It was basically] a room with no view,” as R metaphorically put it.

    Dungeons and Genital Clamps: Inside a Legendary BDSM Chateau

    Ian Frisch

    December 20, 2014

  • At the time Kristina still could not quite pronounce the “R” sound in Russian, but she made her meaning clear.

    Is 9-Year-Old Russian Model Kristina Pimenova Too Sexualized?

    Anna Nemtsova

    December 12, 2014

  • But recently, the MPAA has loosened the stick in its collective ass and allowed women to go there whilst maintaining an R rating.

    Oral Sex Comes of Age in Hollywood: ‘Gone Girl’ the Latest Film to Showcase Female Pleasure

    Marlow Stern

    October 4, 2014

  • Historical Examples of r

  • “And gargle all his ‘r’s,'” added the other, very earnestly.

    The Spenders

    Harry Leon Wilson

  • Does R—— flatter himself that his power over my heart is omnipotent?

    Tales And Novels, Volume 8 (of 10)

    Maria Edgeworth

  • R—— is sacrificed to me; that R——, with whose cursed name you tormented me.

    Tales And Novels, Volume 8 (of 10)

    Maria Edgeworth

  • Note: The editor apologizes for the character of the R’s who have been famous.

    Who Was Who: 5000 B. C. to Date


  • R represents the radius of the curve upon which the vehicle is moving.

    American Rural Highways

    T. R. Agg

  • British Dictionary definitions for r r R noun plural r’s, R’s or Rs

    1. the 18th letter and 14th consonant of the modern English alphabet
    2. a speech sound represented by this letter, in English usually an alveolar semivowel, as in red
    3. See three Rs

    R symbol for

    1. chem radical
    2. currency
      1. rand
      2. rupee
    3. Réaumur temperature (scale)
    4. physics electronics resistance
    5. roentgen or röntgen
    6. chess rook
    7. Royal
    8. chem gas constant
    9. (in the US and Australia)
      1. restricted exhibition (used to describe a category of film certified as unsuitable for viewing by anyone under the age of 18)
      2. (as modifier)an R film

    r. abbreviation for

    1. rare
    2. recto
    3. Also: r rod (unit of length)
    4. ruled
    5. cricket baseball run(s)

    R. r. abbreviation for

    1. registered (trademark)
    2. right
    3. river
    4. rouble

    R. abbreviation for

    1. rabbi
    2. rector
    3. Regina
    4. Republican
    5. response (in Christian liturgy)
    6. Rex
    7. River
    8. Royal

    Word Origin for R. (sense 3) Latin: Queen (sense 6) Latin: King Word Origin and History for r R

    In a circle, meaning “registered (trademark),” first incorporated in U.S. statues 1946. Three Rs (1825) said to have been given as a toast by Sir W. Curtis (1752-1829). R&R “rest and relaxation,” first recorded 1953, American English; R&B “rhythm and blues” (type of popular music) first attested 1949, American English.

    If all our r’s that are written are pronounced, the sound is more common than any other in English utterance (over seven per cent.); the instances of occurrence before a vowel, and so of universal pronunciation, are only half as frequent. There are localities where the normal vibration of the tip of the tongue is replaced by one of the uvula, making a guttural trill, which is still more entitled to the name of “dog’s letter” than is the ordinary r; such are considerable parts of France and Germany; the sound appears to occur only sporadically in English pronunciation. [Century Dictionary]

    The moment we encounter the added r’s of purp or dorg in our reading we know that we have to do with humor, and so with school-marm. The added consonants are supposed to be spoken, if the words are uttered, but, as a matter of fact, they are less often uttered than seen. The words are, indeed, largely visual forms; the humor is chiefly for the eye. [Louise Pound, “The Humorous ‘R,'” “American Mercury,” October 1924]

    She goes on to note that in British humorous writing, -ar “popularly indicates the sound of the vowel in father” and formations like larf (for laugh) “are to be read with the broad vowel but no uttered r.” She also quotes Henry James on the characteristic prominence of the medial -r- sound (which tends to be dropped in England and New England) in the speech of the U.S. Midwest, “under some strange impulse received toward consonantal recovery of balance, making it present even in words from which it is absent, bringing it in everywhere as with the small vulgar effect of a sort of morose grinding of the back teeth.”

    r in Medicine r abbr.

    1. racemic

    R abbr.

    1. right
    2. radical (usually an alkyl or aryl group)
    3. respiration
    4. respiratory exchange ratio
    5. or r roentgen

    r in Science r

    1. Abbreviation of radius


    1. The symbol for resistance.

    Idioms and Phrases with r R

    see three R’s.

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