1. r. - Noun
2. r. - Adjective
3. r. - Verb
4. R. - Proper noun
r.
Reigned.
Byzantine emperor Manuel I Komnenos (r. 1143–1180)
Abbreviation of rare.
Abbreviation of royal.
Mon. Not. R. Astron. Soc.Monthly Notices of the Royal Astronomical Society — ISO 4 abbreviated title
Abbreviation of right.
r. com. car. a. ― right common carotid artery
(law) Abbreviation of rule.
Abbreviation of ruble.
Abbreviation of Regina (“the queen”).
Abbreviation of Rex (“the king”).
Abbreviation of Rabbi.
Source: en.wiktionary.org