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English Words Starting With A

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Noun Verb Adjective Adverb Plural noun Combining form Verb (transitive)Verb (intransitive)Verb (ambitransitive)

ammoniac
adjectivenounLow (Rare/Technical)
/əˈməʊnɪæk/Of or containing ammonia; having a pungent, strong smell characteristic of ammonia.
ammoniate
nounverbverb-transitiveC1
/əˈməʊnɪeɪt/To combine or treat with ammonia, or to form a coordination compound with ammonia as a ligand.
ammonification
nounC1/C2
/əˌmɒnɪfɪˈkeɪʃən/The process by which organic nitrogen is converted into ammonia or ammonium compounds by bacteria.
ammonify
verbverb-intransitiveverb-transitiveVery Low (Technical/Scientific)
/əˈmɒnɪfaɪ/To produce or form ammonia; to treat or combine with ammonia. In biology: to undergo ammonification (conversion of organic nitrogen into ammonia).
ammonioferric oxalate
nounVery Low
/əˌməʊnɪəʊˈfɛrɪk ˈɒksəleɪt/A specific, complex inorganic salt containing ammonia, iron, and oxalate ions, with the formula (NH4)3[Fe(C2O4)3]·3H2O.
ammonite
nounC2
/ˈæmənaɪt/A type of extinct marine mollusc with a coiled, chambered shell, fossilized remains of which are common.
ammonites
plural-nounLow
/ˈæmənaɪts/Extinct marine molluscs with coiled shells, common as fossils.
ammonium
nounC2
/əˈməʊ.ni.əm/The univalent, positively charged ion (NH₄⁺), derived from ammonia.
ammonium acetate
nounLow
/əˈməʊniəm ˈæsɪteɪt/A white, crystalline salt with the chemical formula CH₃COONH₄, formed by the reaction of acetic acid and ammonia.
ammonium bicarbonate
nounC2
/əˌməʊ.ni.əm ˌbaɪˈkɑː.bən.ət/A chemical compound with the formula NH4HCO3, used as a leavening agent and in fire extinguishers.
ammonium bifluoride
nounVery Low
/əˈməʊ.ni.əm baɪˈflʊə.raɪd/A chemical compound with the formula NH₄HF₂, used primarily in industrial etching, cleaning, and as a source of fluoride.
ammonium binoxalate
nounVery low
/əˌməʊ.ni.əm baɪˈnɒk.sə.leɪt/A chemical compound, the ammonium salt of oxalic acid, with the formula (NH₄)HC₂O₄.
ammonium carbamate
nounVery low (technical term)
/əˌməʊniəm ˈkɑːbəmeɪt/An inorganic salt with the formula NH₄[H₂NCO₂], formed by the reaction of ammonia with carbon dioxide.
ammonium carbonate
nounLow
/əˌməʊ.ni.əm ˈkɑː.bə.neɪt/A white, crystalline inorganic salt with the chemical formula (NH₄)₂CO₃, which decomposes into ammonia, carbon dioxide, and water, releasing a strong ammonia smell.
ammonium chloride
nounLow
/əˌməʊ.ni.əm ˈklɔː.raɪd/A white crystalline salt with the chemical formula NH₄Cl, which is highly soluble in water.
ammonium cyanate
nounVery low frequency
/əˈməʊniəm ˈsaɪəneɪt/A specific inorganic salt with the chemical formula NH₄OCN, historically famous for its conversion to urea.
ammonium hydroxide
nounC2
/əˌməʊ.ni.əm haɪˈdrɒk.saɪd/A chemical compound formed by dissolving ammonia gas in water, resulting in a solution that is a weak base.
ammonium ion
nounLow
/əˈməʊniəm ˈaɪən/A positively charged polyatomic ion with the chemical formula NH₄⁺, formed by the protonation of ammonia.
ammonium lactate
nounLow
/əˈməʊ.ni.əm ˈlæk.teɪt/A chemical compound consisting of the ammonium cation and the lactate anion, often used as a topical solution to moisturize and treat dry, scaly skin conditions.
ammonium nitrate
nounC1/C2
/əˌməʊ.ni.əm ˈnaɪ.treɪt/A white, crystalline chemical compound with the formula NH₄NO₃, widely used as a high-nitrogen fertiliser.

Showing 4121–4140 of 8734 words.