Of or pertaining to Acadie, or nova scotia. Acadian farmers. .
a native of Acadie.
(Science: geology) acadian epoch, an epoch at the beginning of the American paleozoic time, and including the oldest American rocks known to be fossiliferous. See geology.
(Science: ornithology) acadian owl, a small North American owl (Nyctule Acadica); the saw-whet.