| A | záporová predpona, napr. alogický = nelogický |
|---|---|
| AAB | Agence Africaine de Biotechnologie |
| AAB | American Association for Bronchology |
| AAB | Annals of Applied Biology |
| AAB | Association of Applied Biologists |
| AACO | Amaryllis Avakian Clinica Oftalmologica |
| AAD | American Academy of Dermatology |
| AAN | American Academy of Neurology (skr.) |
| AARS | nórsky filológ |
| AAS | Alabama Archaeological Society |