- (Received Pronunciation) IPA(key): /əˈkeɪ.di.n̩/
- (US) IPA(key): /əˈkeɪ.di.n̩/, /əˈkeɪ.dʒn̩/
- Rhymes: -eɪdiən
- Of or pertaining to Acadia, its people, or their language or culture. [First attested in the early 19th century.]
- (geology) Of or pertaining to the Acadian epoch.
- A native of Acadia or their descendants who moved to Louisiana; a Cajun. [First attested in the early 18th century.]
- (Canada) A French speaking descendant of the early settlers in the Maritime Provinces.
- (rare) Acadian French: the form of French spoken in Acadia.
- In many places, Acadian has been supplanted by English and by Standard French.
- (rare) Acadian epoch; the Middle Cambrian; the geologic time period from 497 million year ago to 509 million year ago.
- The Burgess Shale contains fossils of very odd organisms that lived during the Acadian.
- Lesley Brown (editor), The Shorter Oxford English Dictionary, 5th edition (Oxford University Press, 2003 , ISBN 978-0-19-860575-7)
- ^ Philip Babcock Gove (editor), Webster's Third International Dictionary of the English Language, Unabridged (G. & C. Merriam Co., 1976 , ISBN 0-87779-101-5)