RI
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See also: Appendix:Variations of "ri"
English[edit]
Proper noun[edit]
RI
- Initialism of Rhode Island, a state of the United States of America.
- Abbreviation of Riau, a province of Indonesia.
Noun[edit]
RI (countable and uncountable, plural RIs)
- Initialism of radioisotope.
- Initialism of radio interference.
Noun[edit]
RI
- (monarchy) rex imperator (“king-emperor”) or regina imperatrix (“queen-empress”); the initials by which a British monarch signed documents after his or her name from 1877 until 1947.