am|mo|ni|ac


am|mo|ni|ac
am|mo|ni|ac «uh MOH nee ak», noun, adjective.
–n.
1. a gum resin used for medicines and as a cement for porcelain; gum ammoniac.
–adj.
= ammoniacal. (Cf.ammoniacal)
[< Latin Ammōniacum < Greek ammōniakós of Ammon (the gum was said to come from near the shrine of Ammon in Libya)]

Useful english dictionary. 2012.