|ȯstrō, |äs+(ˌ) ̷ ̷| ̷ ̷ ̷ ̷ ̷ ̷ adjective
Usage: usually capitalized
Etymology: austr- (I) + riparian
: of, relating to, or being the humid division of the Lower Australian life zone including the lower Mississippi valley and the greater part of the So. Atlantic and Gulf states from Virginia to eastern Texas