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definitions

R.I.

1

Queen and Empress.

Origin of R.I.

1
From the Latin word Rēgīna et Imperātrīx

R.I.

2

King and Emperor.

Origin of R.I.

2
From the Latin word Rēx et Imperātor

RI

or R.I.

Rhode Island (approved especially for use with zip code).

R. & I.

1

king and emperor.

Origin of R. & I.

1
From the Latin word Rēx et Imperātor

R. & I.

2

queen and empress.

Origin of R. & I.

2
From the Latin word Rēgīna et Imperātrīx
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for r.i.

RI

abbreviation for

Regina et Imperatrix
Rex et Imperator
Rhode Island
Royal Institution
religious instruction
(Republic of) Indonesia (international car registration)

Word Origin for RI

(sense 1) Latin: Queen and Empress (sense 2) Latin: King and Emperor (sense 6) R(epublic of) I(ndonesia)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012