| Abbreviation | Definition |
|---|---|
| AHCP | Autosomal Highly Conserved Protein |
| AHK | Arabidopsis Histidine Kinase |
| AHM | Academy for Healthcare Management |
| AI | Ab Initio |
| AIC | Artificially Inseminated Children |
| AICD | Activation Induced Cell Death |
| AID | artificial insemination donor |
| AIF | Apoptosis Inducing Factor |
| AIH | Artificial Insemination by Husband |
| AILP | Amphioxus Insulin Like Peptide |
| AIM | Absolute Imprinting Mode |
| AITR | Activation- Inducible TNFR family member |
| AK | Adenosine Kinase |
| AK | Arginine Kinase |
| AK | Aspartate Kinase |
| AL | Amyloid Light chain |
| ALKP | Alkaline phosphatase |
| ALLN | Acetyl Leucyl Leucyl Norleucinal |
| ALMANAC | Axially Lymphatic Mapping Against Nodal Axillary Clearance |
| ALP | Atherogenic Lipoprotein Phenotype |