RR

See also: rr, R-R, R&R, and R.R.

English

Alternative forms

• R.R. (esp. in legal reference to railroads)

Noun

RR (countable and uncountable, plural RRs)

1. (US) Initialism of railroad.
2. (cycling) Initialism of road race.
3. Abbreviation of rear, where brevity is desired.
4. Initialism of right rear, a location in a square or rectangular layout such as the tires on an automobile or the heating elements on a stovetop.
5. Initialism of Rolls-Royce.
6. Initialism of reverse racism.
7. Initialism of real reality.
8. (statistics, epidemiology) Initialism of relative risk.
9. (US) Initialism of rural route used when addressing mail.
10. Initialism of Riva-Roccin, a blood pressure measurer device.
11. Initialism of role reversal.
12. (information technology) Initialism of resource record.

Related terms

(real reality):

• AR (augmented reality)
• VR (virtual reality)

Translations

railroad

Indonesian: KA Polish: kolej (pl) f Spanish: FC, FFCC

Proper noun

RR

1. Abbreviation of Roraima: a state of Brazil.
2. Initialism of Rocky River: a city in Ohio, United States.

Verb

RR

1. (aviation, travel, dated) (from the status code used in the GDS) reconfirm / reconfirmed.

See also

• R and R

Latin

Alternative forms

• R.R., RR., R. R.

Noun

RR

1. abbreviation of rerum, of things, of topics.

Adjective

RR (singular R)

1. abbreviation of reverendissimi, most holy, most reverend.
2. abbreviation of reverendissimos
3. abbreviation of reverendissimibus

Derived terms

• RR PP

Portuguese

Proper noun

RR ?

1. abbreviation of Roraima: a state of Brazil

Further reading

• “RR”, in Dicionário Aulete Digital (in Portuguese), Rio de Janeiro: Lexikon Editora Digital, 2008–2025
• “RR”, in Dicionário Priberam da Língua Portuguesa (in Portuguese), Lisbon: Priberam, 2008–2025

Romansch

Proper noun

RR m

1. (broadcasting) initialism of Radio Rumantsch, the Swiss-Romansch radio station