Definition of ammoniacal in English:



  • Of or containing ammonia.

    ‘ammoniacal liquor from the coke ovens’
    • ‘Cupron is highly selective for copper ion in ammoniacal solution and for molybdenum in acid.’
    • ‘The ammoniacal acetone supernatant containing extracted pigments was discarded, and the lipoprotein pellet was suspended in 2 mL of homogenization buffer.’
    • ‘Current research has shown an increase in soil acidification through anthropogenic effects including acid precipitation and nitrification of ammoniacal fertilizers.’
    • ‘We have recorded reduced levels of chloride, nitrate-nitrite nitrogen, ammoniacal nitrogen, chemical oxygen and dissolved and suspended solids.’
    • ‘If the odor of the urine is strong, record whether the urine smells urinoid, fruity (like acetone or fingernail polish remover), putrid (fecal smelling) or ammoniacal (like ammonia).’
    • ‘Diabetic ketoacidosis can cause urine to have a fruity or sweet odor, and alkaline fermentation can cause an ammoniacal odor after prolonged bladder retention.’
    • ‘It contains only ammoniacal nitrogen, which is protected from leaching immediately after application since it is held by cation exchange sites on soil clays and organic matter.’
    • ‘Observations on the neutrally buoyant ammoniacal cephalopods of the mesopelagic zone are rare and based on submarine or ROV observations that are typically brief.’
    • ‘Some species live entirely in this restricted habitat, but most become ammoniacal late in ontogeny, as they approach semelparous reproduction.’
    • ‘During the diaper-wearing years, this is usually ammoniacal dermatitis, commonly known as diaper rash.’
    • ‘Ammonium chloride is an effective restrainer, but gives off a strong ammoniacal smell and may shift print color toward the red.’
    • ‘Then come the first faint traces of the animal - warm, only slightly rank, ammoniacal, like a wet dog drying in the sun.’
    • ‘This stuff is strongly ammoniacal and really needs to be used with care and ventilation.’



/ˌaməˈnīək(ə)l/ /ˌæməˈnaɪək(ə)l/


Mid 18th century from Middle English ammoniac, via Old French from Latin ammoniacus. This represented 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. Compare with sal ammoniac.