Dictionary
R
rPronunciation: (är), [key]—
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 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. See
three R's. R
Pronunciation: (är), [key]—
v. Informal.are:
Oysters R in season. R
1. Chem.radical.
2. Math.ratio.
3. regular: a man's suit or coat size.
4. Elect.resistance.
5. 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. Cf.
G (def. 7),
PG, PG–13, X. [abbrev. for restricted]
6. Theat.stage right.
7. Physics.roentgen.
8. Chess.rook.
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. Biochem.arginine.
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. Com.registered (def. 2).
3. Elect.resistance.
4. Physics.roentgen.
5. royal.
6. ruble.
7.
—pl. rs,rupee.
r
Ecol.
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. rabbi.
2. Radical.
3. radius.
4. railroad.
5. railway.
6. (in South Africa) rand; rands.
7. Réaumur.
8. Also,R(in prescriptions) take.
9. rector.
10. redactor.
11. regina.
12. Republican.
13. response.
14. rex.
15. river.
16. road.
17. royal.
18. ruble.
19. rupee.
20. Theat.stage right.
r.
1. rabbi.
2. railroad.
3. railway.
4. range.
5. rare.
6. Com.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.
—pl. rs.rupee.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
