ammoniac

noun

1. Also am·mo·ni·a·cum [am-uh–nahy–uh-kuh m] /ˌæm əˈnaɪ ə kəm/. gum ammoniac.

adjective

2. ammoniacal.

adjective

1. a variant of ammoniacal

noun

1. a strong-smelling gum resin obtained from the stems of the N Asian umbelliferous plant Dorema ammoniacum and formerly used as an expectorant, stimulant, perfume, and in porcelain cementAlso called: gum ammoniac

n.

1. A strong-smelling gum resin from the stems of a plant of western Asia, formerly used in perfumery and in medicine as an expectorant and a stimulant.