ammoniac

(am-o’ne-ak) [L. ammon i’acum). A fetid gum-resin, stimulant and expectorant, from a Persian umbelliferous plant, Dore’ma ammon i’- acum, used in bronchitis and asthma. Ammoniac plaster and plaster of ammoniac and mercury are used as counterirritants in pleurisy and rheumatism. Dose of mistura ammoniac i, 4-1 fl.oz. (30-60 ς.ο.). Presence