R.R.

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

English

Noun

R.R.

  1. Alternative form of RR

Usage notes

This is the customary abbreviation for railroad as used in American case citations. See, e.g., The Bluebook: A Uniform System of Citation, Nineteenth Edition (2010), "Case Names and Institutional Authors in Citations", Table T6, p. 430–431.

Latin

Adjective

R.R.

  1. Alternative form of RR
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