1. Abacterial – Free from bacteria

2. Abasia – inability to walk

3. Abatement – a decrease in the severity of pain or a symptom

4. ABC – Avidin –biotin complex

5. Abdominoscopy – laproscopy

6. Abiatrophy – premature and endogenous loss of vitality or tissue substance .

7. Ablation – separation or detachment

8. Acardia – congential absence of the Heart .

9. Accelerant – a catalyst

10. ACD – Acid citrate dextrose