| BAS | a city in northwestern Switzerland |
|---|---|
| BAS | a leukocyte with basophilic granules easily stained by basic stains |
| BAS | a leukocyte with basophilic granules easily stained by basic stains |
| BAS | the tendency of cells to stain with basic dyes |
| BAS | (biology) staining readily with basic dyes |
| BAS | a member of a subgroup of people who inhabit Lesotho |
| BAS | the language of the Basque people |
| BAS | a member of a people of unknown origin living in the western Pyrenees in France and Spain |
| BAS | an oil port in southern Iraq |
| BAS | nontechnical name for any of numerous edible marine and freshwater spiny-finned fishes |
| BAS | the member with the lowest range of a family of musical instruments |
| BAS | the lowest part of the musical range |