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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)

amitosis
nounVery Low
/ˌeɪmaɪˈtəʊsɪs/A method of direct cell division where the nucleus splits without the formation of chromosomes or the complex stages of typical mitosis.
amitriptyline
nounC2 (Very Low Frequency)
/ˌæmɪˈtrɪptɪliːn/A tricyclic antidepressant medication used to treat depression and some types of nerve pain.
amittai
nounVery Low / Obscure
/əˈmɪtaɪ/The name of the father of the prophet Jonah in the Hebrew Bible.
amity
nounC2
/ˈæm.ɪ.ti/A friendly and peaceful relationship between individuals, groups, or nations.
amman
nounB2
/æˈmɑːn/The capital city of Jordan, located in the Middle East.
ammanati
nounRare/Obsolete
/ˌæməˈnɑːti/(archaic) To tie or bind (someone or something) to a mast, pillar, or post, often as a form of punishment or restraint.
ammeter
nounC2
/ˈæmiːtə/An instrument for measuring electric current in amperes.
ammianus
nounExtremely Rare / Technical
/ˌæmiˈeɪnəs/A proper noun, specifically the name Ammianus Marcellinus, a 4th-century Roman soldier and historian.
ammine
nounVery Low
/ˈæmiːn/A compound formed by the coordination of ammonia (NH₃) or an amine with a metal ion.
ammishaddai
nounVery Low
/ˌæmɪˈʃædaɪ/A Biblical name of Hebrew origin, often interpreted as "my people is (or are) Almighty" or "people of the Almighty," used as a personal name for individuals or a place name in ancient texts.
ammo
nounMedium-High
/ˈæm.əʊ/Informal abbreviation for ammunition, meaning projectiles fired from weapons (bullets, shells, rockets).
ammocete
nounVery Low (Technical/Highly Specialized)
/ˈæməsiːt/The larval stage of a lamprey.
ammocoete
nounExtremely Rare / Highly Specialized
/ˈamə(ʊ)ˌsiːt/The larva of a lamprey.
ammoglyph
nounExtremely Rare / Technical
/ˈæm.ə(ʊ).ɡlɪf/A fossilised trace, footprint, or track made by an ancient human or hominin, preserved in sand that later lithified into rock.
ammon
nounRare / Literary
/ˈæm.ən/A term meaning to gather or accumulate, particularly with a connotation of pressure, mass, or overwhelming force.
ammonal
nounLow
/ˈæmənæl/An explosive mixture consisting mainly of ammonium nitrate and aluminium powder.
ammonate
nounC2 / Very low frequency, highly technical
/ˈæməneɪt/To combine or treat with ammonia, or to form an ammoniate.
ammonia
nounC1
/əˈməʊnɪə/A colourless, pungent gas or liquid (NH₃) containing nitrogen and hydrogen, used in cleaning products, fertilizers, and industrial processes.
ammonia clock
nounVery Low
/əˈməʊniə ˈklɒk/A highly precise timekeeping device, an atomic clock that uses the vibrational frequency of ammonia molecules (specifically the nitrogen atom) as its timebase.
ammonia liquor
nounLow
/əˌməʊniə ˈlɪkə/A concentrated aqueous solution of ammonia gas (NH₃).

Showing 4101–4120 of 8734 words.