| Abbreviation | Definition |
|---|---|
| AAC | Amino Acid Chelate |
| AACC | Acetic Acid Corn Cobs |
| AACC | American Association for Clinical Chemistry |
| AACC | American Association of Cereal Chemists |
| AACCI | American Association of Cereal Chemists International |
| AACT | American Association of Chemistry Teachers |
| AAE | Ascorbic Acid Equivalents |
| AAG | Alpha Acid Glycoprotein |
| AAI | Amino Acid Identity |
| AAIF | Advanced Analytical Instrument Facilities |
| AAK | Amino Acid Kinase |
| AALS | Anionic Acid Labile Surfactants |
| AAO | Amino Acid Oxidase |
| AARM | Amino Acid Ratio of Muscle |
| AAS | Atomic Absorption Spectrometry |
| AAS | Atomic Absorption Spectrophometer |
| AAU | Alpha Acid Unit |
| AAU | Alpha Acid Units |
| AAV | Air Admittance Valve |
| AAVI | Artificial Acid Video Impressions |