a. [f. prec. + -AL.] Of, pertaining to, or of the nature of ammonia.
1732. Arbuthnot, Rules of Diet, 268. Jellies made of the solid parts of Animals contain a sort of ammoniacal Salt.
1798. Phil. Trans., LXXXVIII. 20. The mixture … emitted ammoniacal gaz.
1813. Sir H. Davy, Agric. Chem., 301. A bitter extract, which affords Ammoniacal fumes.
1818. Faraday, Exp. Res., vii. 19. They gave off much ammoniacal gas.
1833. Brewster, Nat. Magic, v. 113. A solution of the ammoniacal carbonate of copper.
1869. Roscoe, Elem. Chem., 75. The ammoniacal liquors of the gasworks.
