| ACA | any of various spiny trees or shrubs of the genus Acacia |
|---|---|
| ACA | Australian tree that yields tanning materials |
| ACA | scrubby Australian acacia having extremely foul-smelling blossoms |
| ACA | East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods |
| ACA | evergreen Australasian tree having white or silvery bark and young leaves and yellow flowers |
| ACA | tropical American thorny shrub or small tree |
| ACA | tall Australian acacia yielding highly valued black timber |
| ACA | shrubby Australian tree having clusters of fragrant golden yellow flowers |
| ACA | African tree supposed to mark healthful regions |
| ACA | the academic world |
| ACA | the academic world |
| ACA | an educator who works at a college or university |