| active | (astronomy |
|---|---|
| active | in a state of habitual or vigorous activity |
| active | characterized by energetic bodily activity |
| active | in operation |
| active | taking part in an activity |
| active | being in physical motion |
| active | (military) engaged in or ready for military or naval operations |
| active | chemical agent capable of activity |
| active | air defense by the use aircraft or missiles or artillery or electronic countermeasures |
| active | an application that is currently running and in the foreground |
| active | childbirth during which the mother is encouraged to be an active participant |
| active | a citizen who takes an active role in the community (as in crime prevention and neighborhood watch) |