| ACA | a neoplasm originating in the epidermis |
|---|---|
| ACA | Australian elapid snakes |
| ACA | venomous Australian snake resembling an adder |
| ACA | a teleost fish with fins that are supported by sharp inflexible rays |
| ACA | teleost fishes having fins with sharp bony rays |
| ACA | a genus of Bruchidae |
| ACA | larvae live in and feed on growing or stored beans |
| ACA | an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis) |
| ACA | a skin disease characterized by dark wart-like patches in the body folds |
| ACA | of or relating to or having acanthosis |
| ACA | shaped like a spine or thorn |
| ACA | surgeonfishes |