| AC | shaped like a spine or thorn |
|---|---|
| AC | surgeonfishes |
| AC | type genus of the Acanthuridae: doctorfishes |
| AC | surgeon fish of the West Indies |
| AC | any plant of the genus Acanthus having large spiny leaves and spikes or white or purplish flowers |
| AC | widely distributed herbs and shrubs and trees |
| AC | widely cultivated southern European acanthus with whitish purple-veined flowers |
| AC | a state in which the level of carbon dioxide in the blood is lower than normal |
| AC | relating to or demonstrating acapnia |
| AC | relating to or demonstrating acapnia |
| AC | relating to or demonstrating acapnia |
| AC | a port and fashionable resort city on southern Mexico's Pacific coast |