Ra's

[rah]
noun
the 10th letter of the Arabic alphabet.

Origin:
< Arabic

Dictionary.com Unabridged

Ra

[rah]
noun Egyptian Religion.
a sun god of Heliopolis, a universal creator worshiped throughout Egypt (typically represented as a hawk-headed man bearing on his head the solar disk and the uraeus).
Also, Re.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
Ra1
 
the chemical symbol for
radium

Ra or Re2 (rɑː)
 
n
the ancient Egyptian sun god, depicted as a man with a hawk's head surmounted by a solar disc and serpent
 
Re or Re2
 
n

RA
 
abbreviation for
1.  rear admiral
2.  astronomy right ascension
3.  (in Britain) Royal Academician or Academy
4.  (in Britain) Royal Artillery
5.  Argentina (international car registration)
 
[(sense 5) from República Argentina]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

Ra
The symbol for the element radium.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
Ra  
The symbol for radium.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Abbreviations & Acronyms
Ra
radium
RA
  1. Argentina (international vehicle ID)

  2. rear admiral

  3. reasonable alternative

  4. regular army

  5. remedial action

  6. research assistant

  7. research associate

  8. resident advisor

  9. resident assistant

  10. rheumatoid arthritis

  11. right ascension

  12. right atrium

  13. risk analysis

  14. route analysis

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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