Source : WordNet®

adenosine deaminase
     n : an enzyme found in mammals that can catalyze the deamination
         of adenosine into inosine and ammonia; "ADA deficiency
         can lead to one form of severe combined immunodeficiency
         disease"; "the gene encoding ADA was one of the earlier
         human genes to be isolated and cloned for study" [syn: {ADA}]