RR

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

English[edit]

(1) A traffic sign announces a level railroad crossing.

Alternative forms[edit]

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

Noun[edit]

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.

Related terms[edit]

(real reality):

Proper noun[edit]

RR

  1. Abbreviation of Roraima, a state of Brazil.

Verb[edit]

RR

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

See also[edit]

Latin[edit]

Alternative forms[edit]

Noun[edit]

RR

  1. Abbreviation of rerum, of things, of topics.

Adjective[edit]

RR (singular R)

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

Derived terms[edit]

Portuguese[edit]

Proper noun[edit]

RR

  1. Abbreviation of Roraima (Brazilian state)