acadia
- n the French-speaking part of the Canadian Maritime Provinces
acadia national park
- n a national park in Maine showing marine erosion and glaciation; includes seashore and also the highest point on the Atlantic coast
acalypha
- n a genus of herbs and shrubs belonging to the family Euphorbiaceae
acanthaceae
- n widely distributed herbs and shrubs and trees; sometimes placed in the order Scrophulariales