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English Words Starting With A

8,734 entries — pick a word to see its definition, pronunciation, and usage.

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

anticolonialism
nounLow
/ˌantɪkəˈləʊnɪəlɪz(ə)m/Opposition to colonialism, especially the political movement or ideology that seeks to end colonial rule.
anticonvulsant
adjectivenounC2
/ˌæntikənˈvʌls(ə)nt/A drug used to prevent or reduce the severity of seizures (convulsions).
anticorona
nounC1/C2 (Specialized Scientific Term)
/ˌæntiːkəˈrəʊnə/A faint, outer region of luminous plasma sometimes visible around the Sun during a total solar eclipse, extending beyond the main corona.
anticorrosive
adjectivenounC2
/ˌæntɪkəˈrəʊsɪv/A substance or coating that prevents or slows corrosion (rust or chemical degradation) of metals
anticosti
nounLow
/ˌæntɪˈkɒsti/A large island in the Gulf of St. Lawrence, Quebec, Canada, known for its wilderness, shipwrecks, and history as a private hunting preserve.
anticrepuscular arch
nounRare / Technical
/ˌæn.ti.krɪˈpʌs.kjə.lər ɑːtʃ/A meteorological optical phenomenon appearing as a faint, diffuse band of light opposite the sun in the sky, running parallel to the horizon, often visible at twilight.
antics
plural-nounB2
/ˈæn.tɪks/Silly, exaggerated, or playful actions and behaviour that are often amusing to watch.
anticum
nounRare / Technical / Specialized
/ˈæntɪkəm/The front part or façade of a classical temple, especially the portico or porch.
anticyclogenesis
nounVery Rare / Technical
/ˌantɪˌsʌɪklə(ʊ)ˈdʒɛnɪsɪs/The process of development or intensification of an anticyclone (a high-pressure weather system).
anticyclolysis
nounVery Low (Specialized Technical Term)
/ˌæntiˌsaɪˈklɒləsɪs/The process of dissipation, weakening, or collapse of an anticyclone.
anticyclone
nounC1
/ˌantɪˈsʌɪkləʊn/A large-scale weather system with high atmospheric pressure at its centre, around which air circulates clockwise in the Northern Hemisphere and anticlockwise in the Southern Hemisphere.
antidazzle mirror
nounLow
/ˌæn.tiˈdæz.əl ˈmɪr.ə/A car rear-view mirror, usually interior, designed to reduce the glare from headlights of following vehicles at night by tilting its reflective surface.
antidepressant
adjectivenounC1
/ˌæn.ti.dɪˈpres.ənt/A medical substance (e.g., a pill) used to treat depression and related conditions.
antiderivative
nounC2
/ˌæn.ti.dɪˈrɪv.ə.tɪv/A function whose derivative is the given function; essentially the 'reverse' of differentiation in calculus.
antidesiccant
nounRare
/ˌantɪdɪˈzɪk(ə)nt, ˌantɪˈdɛsɪk(ə)nt/A substance applied to plants to reduce water loss, especially during transplanting or winter.
antideuteron
nounC2/Extremely Rare
/ˌæntiˈdjuːtərɒn/The antimatter counterpart of a deuteron, consisting of an antiproton and an antineutron bound together.
antidisestablishmentarian
adjectivenounVery low
/ˌæn.ti.dɪs.ɪˌstæb.lɪʃ.mənˈteə.ri.ən/A person who opposes the withdrawal of state support or recognition from an established church, especially the Church of England.
antidisestablishmentarianism
nounVery Low
/ˌæn.ti.dɪs.ɪˌstæb.lɪʃ.mənˈteə.ri.ə.nɪ.zəm/A political position opposing the withdrawal of state support or recognition from an established church, particularly the Church of England.
antidiuretic
adjectivenounC2
/ˌæntiˌdaɪjʊˈrɛtɪk/A substance that reduces or prevents the production of urine.
antidiuretic hormone
nounC2
/ˌæn.ti.daɪ.jʊˈret.ɪk ˈhɔː.məʊn/A hormone that reduces urine production by promoting water reabsorption in the kidneys.

Showing 5441–5460 of 8734 words.