Ra

Symbol for radium.

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radial artery; radioactive; radiographic abstraction; radiographic absorptiometry; ragocyte; ragweed antigen; rapidly adapting [receptors]; reactive arthritis; reciprocal asymmetrical; refractory anemia; refractory ascites; regression analysis; renal artery; renin-angiotensin; repeat action; residual air; retinoic acid; rheumatoid arthritis; right angle; right arm; right atrium; right auricle; risk adjustment; risk assessment; rotation angiography; Roy adaptation [model]

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RA abbr rheumatoid arthritis

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R_AW airway resistance.