What does arcadian or arcadic mean?
The definition of arcadian and arcadic
Ar*ca”di*an, Ar*ca”dic, a.
Etym: [L. Arcadius, Arcadicus, fr. Arcadia: cf. F. Arcadien, Arcadique.]

Of or pertaining to Arcadia; pastoral; ideally rural; as, Arcadian simplicity or scenery.