1. A gum resin obtained from an Asian plant (Dorema ammoniacum), used historically in medicine and as an adhesive.
Usage: Also called gum ammoniac; archaic or specialized use

1. Of, relating to, or containing ammonia or ammonium compounds.
Usage: chemistry

Examples

• Ammoniac was valued in ancient times as a healing agent.
• The ammoniac resin was dissolved in water for medicinal purposes.
• Ammoniac salts are commonly used in laboratory experiments.
• The chemist identified ammoniac compounds in the sample.
• Historically, traders brought ammoniac from distant regions along the Silk Road.