| ARA |
Academy of Rehabilitative Audiometry; acetylene reduction activity; American Rheumatism Association; anorectal agenesis; antireticulin antibody; aortic root angiogram; arabinose; Associate of the Royal Academy |
| ara |
arabinose |
| ara-A |
adenine arabinoside |
| ara-C |
acytosine arabinose; cytosine arabinoside |
| ara-U |
arabinosyluracil |
| ARAL |
adjustment reaction to adult life |
| ARAM |
antigen recognition activation motif |
| ARAMIS |
American Rheumatism Association Medical Information System |
| ARAO |
angiographic area of right anterior oblique projection |
| ARAS |
ascending reticular activating system |
