/ əˈməʊniə; NAmE əˈmoʊ-/ noun
[ U ] ( symb NH 3 ) a gas with a strong smell; a clear liquid containing ammonia, used as a cleaning substance
late 18th cent.: modern Latin , from sal ammoniacus , salt of Ammon. This came from the Greek word ammōniakos of Ammon, used as a name for the salt and gum obtained near the temple of Jupiter Ammon at Siwa in Egypt.