R

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R 1

 (är)
A trademark for a movie rating indicating that admission will be granted only to persons of or over a certain age, usually 17, unless accompanied by a parent or guardian.

R 2

1. The symbol for gas constant.
2. The symbol for a hydrocarbon side chain or substituent of variable chemical structure.

R 3

abbr.
1. range (surveying)
2. Réaumur (scale)
3. registered trademark
4. Republican
5. Ecclesiastical response
6. right
7. or r roentgen
8. rook (chess)
9. Baseball run

r 1

or R  (är)
n. pl. r's or R's also rs or Rs
1. The 18th letter of the modern English alphabet.
2. Any of the speech sounds represented by the letter r.
3. The 18th in a series.
4. Something shaped like the letter R.

r 2

abbr.
1. Mathematics radius
2. Genetics recombinant
3. or R Electricity resistance

r

(ɑː) or

R

n, pl r's, R's or Rs
1. (Linguistics) the 18th letter and 14th consonant of the modern English alphabet
2. (Phonetics & Phonology) a speech sound represented by this letter, in English usually an alveolar semivowel, as in red
3. (Education) See three Rs

R

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

R, r

(ɑr)

n., pl. Rs R's, rs r's.
1. the 18th letter of the English alphabet, a consonant.
2. any spoken sound represented by this letter.
3. something shaped like an R.
4. a written or printed representation of the letter R or r.

R

1. Chem. radical.
2. Math. ratio.
3. regular: a man's suit or coat size.
4. restricted: a motion-picture rating advising that children under 17 will not be admitted unless accompanied by an adult. Compare G (def. 2), NC-17, PG, PG-13, X (def. 7).
5. right.
6. roentgen.

R


Symbol.
1. the 18th in order or in a series.
2. arginine.
3. registered trademark: written as superscript ® following a name registered with the U.S. Patent and Trademark Office.
4. Elect. resistance.

r

1. radius.
2. Elect. resistance.
3. roentgen.
4. royal.
5. ruble.
6.
pl. rs, rupee.

r


Ecol.
the 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.
7. Réaumur.
8. Also, R (in prescriptions) take.
[< Latin recipe]
9. rector.
10. Regina.
11. Republican.
12. Eccles. response.
13. Rex.
14. right.
15. river.
16. road.
17. royal.
18. ruble.
19. rupee.

r.

1. rabbi.
2. railroad.
3. railway.
4. range.
5. rare.
6. Com. received.
7. recipe.
8. replacing.
9. right.
10. river.
11. road.
12. rod.
13. royal.
14. rubber.
15. ruble.
16. Baseball. run.
17.
pl. rs. rupee.

r

1. Mathematics Abbreviation of radius
2. or R Electricity Abbreviation of resistance
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.R - a unit of radiation exposureR - a unit of radiation exposure; the dose of ionizing radiation that will produce 1 electrostatic unit of electricity in 1 cc of dry air
radioactivity unit - a measure of radioactivity
2.R - (physics) the universal constant in the gas equation: pressure times volume = R times temperature; equal to 8.3143 joules per kelvin per mole
natural philosophy, physics - the science of matter and energy and their interactions; "his favorite subject was physics"
constant - a number representing a quantity assumed to have a fixed value in a specified mathematical context; "the velocity of light is a constant"
3.r - the 18th letter of the Roman alphabet
Latin alphabet, Roman alphabet - the alphabet evolved by the ancient Romans which serves for writing most of the languages of western Europe
alphabetic character, letter of the alphabet, letter - the conventional characters of the alphabet used to represent speech; "his grandmother taught him his letters"
4.R - the length of a line segment between the center and circumference of a circle or spherer - the length of a line segment between the center and circumference of a circle or sphere
diam, diameter - the length of a straight line passing through the center of a circle and connecting two points on the circumference
semidiameter - the apparent radius of a celestial body when viewed as a disc from the earth
radius of curvature - the radius of the circle of curvature; the absolute value of the reciprocal of the curvature of a curve at a given point
length - the linear extent in space from one end to the other; the longest dimension of something that is fixed in place; "the length of the table was 5 feet"
Translations

R

1 r1 [ɑːʳ] N (= letter) → R, r f
R for RobertR de Ramón
the three Rs (= reading, writing and arithmetic) lectura, escritura y aritmética THREE RS

R

2 r2
A. ABBR
1. (Brit) =RexR
2. (Brit) =ReginaR
3. (Geog) =riverR
4. =rightdcha, der, dero
5. =Réaumur (scale)
6. (US) (Pol) =Republican
B. ADJ ABBR (US) (Cine) =restrictedsólo mayores

R

r [ˈɑːr] n (= letter) → R, r m
R for Robert, R for Roger (US)R comme Raoul

R

[ˈɑːr] abbr
(=right) → dr
(=river) → riv., fl
(=Réaumur (scale)) → R
(US) (CINEMA) (=restricted) interdit aux moins de 17 ans
(US) = republican
(British) (=Rex, Regina)

R

, r
nR nt, → r nt; three Rs (= reading, writing and arithmetic)Lesen, Schreiben und Rechnen (die drei grundlegenden Fähigkeiten eines gebildeten Menschen)

R

abbr of river
(US Film) abbr of restrictedfür Jugendliche nicht geeignet

r

abbr of rightr.

R

r [ɑːʳ] n (letter) → R, r f or m inv
the three Rs → leggere, scrivere e far di conto
R for Robert (Am) R for Roger → R come Roma
References in classic literature ?
"Prince, humanum est errare,* but..." replied the doctor, swallowing his r's, and pronouncing the Latin words with a French accent.
As she took off her outer garment in the hall, she heard the footman, pronouncing his "r's" even like a Kammerjunker, say, "From the count for the princess," and hand the note.
Fairy me tribber is what you say to the fairies when you want them to give you a cup of tea, but it is not so easy as it looks, for all the r's should be pronounced as w's, and I forget this so often that David believes I should find difficulty in making myself understood.
"You shall teach me, and when I am a woman we will set up a school where nothing but the three R's shall be taught, and all the children live on oatmeal, and the girls have waists a yard round," said Rose, with a sudden saucy smile dimpling her cheeks.
I don't think you have read ten pages of Spencer, but there have been critics, assumably more intelligent than you, who have read no more than you of Spencer, who publicly challenged his followers to adduce one single idea from all his writings - from Herbert Spencer's writings, the man who has impressed the stamp of his genius over the whole field of scientific research and modern thought; the father of psychology; the man who revolutionized pedagogy, so that to-day the child of the French peasant is taught the three R's according to principles laid down by him.
Most of them were clever, drunken critters who taught the children the three R's when they were sober, and lambasted them when they wasn't.
In each case, not only are the 'e's' slurred and the 'r's' tailless, but you will observe, if you care to use my magnifying lens, that the fourteen other characteristics to which I have alluded are there as well."
I was amazed at the startled alacrity of R's "Yes, sir." He ran before me out on the landing.
The acquisition of BWP expands A and R's geographic presence in the Midwestern US and increases A and R's overall transportation capacity with additional tractors and speciality trailers.
Cardi filed the trademark request for two versions of 'Okurrr' -- spelt with 3 R's and 2 R's -- on March 11.
The R's started brightly and were the better side at the start of the first half.
There were also failings in arranging Mr R's transfer back to a district general hospital for treatment.