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单词 r, r
释义

WordReference Random House Learner's Dictionary of American English © 2024
R, r /ɑr/USA pronunciation   n., pl. Rs or R's, rs or r's. 
  1. the 18th letter of the English alphabet, a consonant.

R,  an abbreviation of:
  1. Mathematicsratio.
  2. Biochemistry, Clothingregular: a man's suit or coat size.
  3. Show Businessrestricted: a motion-picture rating advising that children under the age of 17 will not be admitted unless accompanied by an adult. Compare G (def. 2),NC-17,PG,PG-13,X (def. 7).
  4. Show Businessright.

R,  [Symbol.]
  1. registered trademark: written as superscript ® following a name registered with the U.S. Patent and Trademark Office.
  2. Electronicsresistance.

r,  an abbreviation of:
  1. radius.

R.,  an abbreviation of:
  1. Mathematicsradius.
  2. Rail Transportrailroad.
  3. Rail Transportrailway.
  4. GovernmentRepublican.
  5. right.
  6. river.
  7. road.

r.,  an abbreviation of:
  1. Rail Transportrailroad.
  2. Rail Transportrailway.
  3. right.
  4. river.
  5. road.
  6. Weights and Measuresrod.

WordReference Random House Unabridged Dictionary of American English © 2024
R, r  (är),USA pronunciation n., pl. 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 ofR.
  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. See three R's. 

R  (är),USA pronunciation 
  1. Informal Termsv. are:Oysters R in season.

R, 
    1. Chemistryradical.
    2. Mathematicsratio.
    3. Biochemistry, Clothingregular: a man's suit or coat size.
    4. Electricityresistance.
    5. Show Businessrestricted: 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. Cf. G (def. 7), PG, PG–13, X. [abbrev. for restricted]
    6. Show Business[Theat.]stage right.
    7. Physicsroentgen.
    8. Chessrook.

R,  Symbol.
  1. the 18th in order or in a series, or, when I is omitted, the 17th.
  2. (sometimes l.c.) the medieval Roman numeral for 80. Cf. Roman numerals. 
  3. Biochemistryarginine.
  4. [Physics.]See universal gas constant. 
  5. registered trademark: written as superscript ® following a name registered with the U.S. Patent and Trademark Office.

r, 
    1. radius.
    2. Business[Com.]registered (def. 2).
    3. [Elect.]resistance.
    4. Physicsroentgen.
    5. royal.
    6. Currencyruble.
    7. Currencypl. rs, rupee.

r, [Ecol.]
  1. Ecologythe 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. Judaismrabbi.
    2. Radical.
    3. Mathematicsradius.
    4. Rail Transportrailroad.
    5. Rail Transportrailway.
    6. Currency(in South Africa) rand;
      rands.
    7. Réaumur.
    8. DrugsAlso, R (in prescriptions) take.
      • Latin recipe
    9. rector.
    10. redactor.
    11. regina.
    12. GovernmentRepublican.
    13. response.
    14. rex.
    15. river.
    16. road.
    17. royal.
    18. Currencyruble.
    19. Currencyrupee.
    20. Show Business[Theat.]stage right.

r., 
    1. rabbi.
    2. Rail Transportrailroad.
    3. Rail Transportrailway.
    4. range.
    5. rare.
    6. [Com.]received.
    7. recipe.
    8. replacing.
    9. residence.
    10. right.
    11. rises.
    12. river.
    13. road.
    14. Weights and Measuresrod.
    15. royal.
    16. rubber.
    17. Currencyruble.
    18. Sport[Baseball.]run;
      runs.
    19. Currencypl. rs. rupee.
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更新时间：2024/9/20 13:57:45