An organism that lives and thrives under acidic conditions; a form of extremophile. / A plant that thrives in relatively acid soil.

(medicine) Spasmodic contraction of the gastric walls.

Third-person singular simple present indicative form of environ

(historical) The ancient city of Hama. / (historical) A city of ancient Cilicia situated near Issus. / (historical) A city of ancient Bithynia.