Treated with or containing an ammoniuret; combined with ammonia in the form of such a compound.
From ammoniuret + -ed (the past participle suffix), describing something that has undergone ammonia combination; purely from historical chemistry terminology.
The -ed and -uret suffixes stack in 'ammoniureted,' creating a word that sounds Victorian—it's a relic of 18th-century chemistry before systematic nomenclature took over.
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