AR

• absolute risk;

• acceptable risk;

• accounts receivable;

• achievement ratio;

• acrosome reaction;

• actinic reticuloid [syndrome];

• active resistance;

• acute rejection;

• acute relapse;

• adherence ratio;

• admission rate;

• admitting room;

• adrenergic receptor;

• adrenodoxin reductase;

• airway resistance;

• alarm reaction;

• alcohol related;

• alkali reserve;

• allergic rhinitis;

• allowance region [radiotherapy];

• alloy restoration;

• ambulance report;

• amphiregulin;

• amplitude ratio;

• analytical reagent;

• androgen receptor;

• anterior root;

• aortic regurgitation;

• apical-radial;

• Argyll Robertson [pupil];

• aromatase;

• arsphenamine;

• articulare;

• artificial respiration;

• ascorbate reductase;

• assisted respiration;

• at risk;

• atrial rate;

• atrial reversal;

• atrophic rhinitis;

• augmented reality [computer graphics];

• autoradiography;

• autoregressive;

• autosomal recessive