| BA | a bachelor's degree in engineering |
|---|---|
| BA | a bachelor's degree in theology |
| BA | stag party held for a bachelor (usually on the night before he is married) |
| BA | tropical American herb having rose to red or purple flowers that can be dried without losing color |
| BA | an annual Eurasian plant cultivated in North America having showy heads of blue or purple or pink or white flowers |
| BA | an academic degree conferred on someone who has successfully completed undergraduate studies |
| BA | a knight of the lowest order |
| BA | the state of being an unmarried man |
| BA | the time of a man's life prior to marriage |
| BA | typically rod-shaped usually gram-positive bacteria that produce endospores |
| BA | (biology) relating to or produced by or containing bacilli |
| BA | marine and freshwater eukaryotic algae: diatoms |