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English (UK)
Cambridge Dictionary Online

Meaning of R, r in English

R, r
noun
uk
/ɑːr/ us
/ɑːr/
plural Rs, R's or r's

R, r noun (LETTER)

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[ C or U ]
the 18th letter of the English alphabet
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Letters of alphabets
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R, r noun (RIVER)

written abbreviation for river , used in writing before or after the name of a river:
R Thames
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Watercourses & waterfalls
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R, r noun (DIRECTION)

written abbreviation for right
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Direction of motion
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R, r noun (ROYAL PERSON)

abbreviation for Rex (= king) or Regina (= queen), used after the name of a king or queen:
Elizabeth R
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Royalty, aristocracy & titles
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R, r
adjective
uk
/ɑːr/ us
/ɑːr/

R, r adjective (ROYAL)

written abbreviation for royal , used in the names of organizations in the UK:
He's an RAF (= Royal Air Force) officer.
RSPH, the Royal Society for Public Health
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Named organizations & societies & their members
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R, r adjective (DIRECTION)

written abbreviation for right :
R eye: 3.20/L eye: 3.25
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General location and orientation
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R, r adjective (FILM)

[ C or U ] US
abbreviation for restricted : used to refer to a film that people under 17 years of age can see only if a parent or guardian is with them
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Cinema ratings & types of film
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R, r
adverb
uk
/ɑːr/ us
/ɑːr/
written abbreviation for right
SMART Vocabulary: related words and phrases
General location and orientation
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R
noun [ S or U ]
mainly UK
uk
/ɑːr/ us
/ɑːr/
(also R0)
symbol for reproduction number: the average number of people that one person with a particular disease infects:
An R of less than 1 means that the virus will eventually die out.
R was estimated to be 1.46 for H1N1 in 2009.
The key R rate of measuring COVID-19 spread rose owing to care home infections.
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Passing on illness & causing disease
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(Definition of R, r from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

R | American Dictionary

R
noun [ C ]
(also r)
us
/ɑr/
plural R’s, Rs, r’s or rs

R noun [C] (LETTER)

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the 18th letter of the English alphabet
R
adjective [ not gradable ]

R adjective [not gradable] (MOVIE)

abbreviation for restricted
Note:
  • Used in the US for movies that people under the age of 17 will not be allowed in to see except if they are with an adult.
(Definition of R, r from the Cambridge Academic Content Dictionary © Cambridge University Press)
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Translations of R, r

in Chinese (Traditional)
字母, （英文字母表的第18個字母）, 河流…
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in Chinese (Simplified)
字母, （英语字母表的第18个字母）, 河流…
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in Spanish
decimoctava letra del abecedario inglés:, R, r…
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in Portuguese
décima oitava letra do alfabeto, R, r…
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in more languages
in Japanese
in Polish
in Turkish
in Catalan
in Korean
in Italian
英字アルファベットの第18字…
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R, r…
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alfabenin onsekizinci harfi…
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divuitena lletra de l’alfabet anglès: R, r…
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아르(영어 알파벳의 열여덟번째 자)…
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diciottesima lettera dell’alfabeto inglese…
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R-rated
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R0
RA

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willing to consider ideas and opinions that are new or different to your own

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