| ACA | (botany) having no carpels |
|---|---|
| ACA | (botany) having no carpels |
| ACA | producing no fruit |
| ACA | a mite of the genus Acarus |
| ACA | a cell without a nucleus (as an erythrocyte) |
| ACA | (verse) metrically complete |
| ACA | a disorder in which a lesion to the central nervous system leaves you unable to formulate a statement or to express yourself in an organized manner |
| ACA | an inability to retain bodily secretions |
| ACA | (psychoanalysis) a lack of cathexis |
| ACA | (zoology) lacking a tail or taillike appendage |
| ACA | (zoology) lacking a tail or taillike appendage |
| ACA | (botany) having no apparent stem above ground |