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2295 entries found
rh- 
consonantal digraph used in Latin (and thus in English words from Latin) to represent Greek initial aspirated -r-.
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rheo- 
word-forming element meaning "current of a stream," from Greek rheos "a flowing, stream, current," from PIE root *sreu- "to flow."
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rhino- 
before vowels rhin-, word-forming element meaning "nose, of the nose," from Greek rhino-, combining form of rhis "nose," which is of uncertain origin.
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Romano- 
word-forming element meaning "pertaining to Rome or Romans or their language," from combining form of Latin Romanus (see Roman).
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Russo- 
word-forming element meaning "pertaining to Russia, Russians, or the Russian language," from combining form of Medieval Latin Russi (plural) "the Russians" (see Russia).
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R.A.F. 
also RAF, initialism (acronym) for Royal Air Force, founded 1918 by consolidation of Royal Flying Corps and Royal Naval Air Service.
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R.E.M. 
also REM, 1957, initialism (acronym) for rapid eye movement.
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R.O.T.C. 
also ROTC, 1916, American English, initialism (acronym) for Reserve Officers' Training Corps, established as part of the National Defense Act of 1916.
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R.S.V.P. 
also RSVP, c. 1845, from French initialism (acronym) of répondez, s'il vous plait "reply, if you please," as it might have been written on a letter or envelope.
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Ra 
"hawk-headed sovereign sun god of Egyptian mythology," from Egyptian R' "sun, day."
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