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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)

archduke
nounC2 (Very low frequency; specialized historical/literary term)
/ˌɑːtʃˈdjuːk/a title of nobility, specifically a chief duke, especially in the historical Austro-Hungarian Empire; a prince ranking just below the emperor.
archdukedom
nounVery Low / Historical
/ˌɑːtʃˈdjuːkdəm/The territory, rank, or jurisdiction of an archduke or archduchess.
archean
adjectivenounC2
/ɑːˈkiːən/Relating to the earliest geological eon in Earth's history, from about 4 billion to 2.5 billion years ago, characterized by the formation of the first continents and the earliest known life forms.
archebanc
nounC2
/ˈɑːtʃɪbæŋk/A medieval bench or long wooden seat with supports.
arched squall
nounVery Low (Technical/Specialist)
/ɑːtʃt skwɔːl/A meteorological phenomenon where a squall line (a line of intense thunderstorms) takes on a pronounced bow or arch shape on radar or satellite imagery, indicating particularly severe straight-line winds at the leading edge.
arched truss
nounLow (Specialist Technical Term)
/ɑːtʃt trʌs/A structural framework consisting of a rigid, arched arrangement of beams or bars, designed to span a space and support loads primarily by axial forces.
archegonium
nounLow
/ˌɑːkɪˈɡəʊnɪəm/The multicellular female reproductive organ in ferns, mosses, and some other non-flowering plants, where the egg is produced and fertilisation occurs.
archencephalon
nounVery Low (Specialist)
/ˌɑːkɛnˈsɛfəlɒn/The primitive forebrain region in the early embryonic development of vertebrates.
archenemy
nounC1
/ˌɑːtʃˈen.ə.mi/One's chief, ultimate, or principal enemy.
archenteron
nounC2
/ɑːˈkɛntərɒn/the primary digestive cavity formed during the early embryonic development of many animals, particularly during gastrulation.
archeoastronomy
nounC2 (Very Low Frequency)
/ˌɑː.ki.əʊ.əˈstrɒn.ə.mi/The study of the astronomical practices, celestial lore, and cosmological beliefs of ancient or traditional cultures through their archaeological remains and historical records.
archeocyte
nounVery Low
/ˈɑːkɪə(ʊ)sʌɪt/A type of primitive, undifferentiated cell in certain invertebrates, such as sponges, capable of developing into other cell types.
archeology
nounB2
/ˌɑː.kiˈɒl.ə.dʒi/The scientific study of human history and prehistory through the excavation and analysis of artifacts, structures, and other physical remains.
archeometry
nounVery Low
/ˌɑː.kiˈɒm.ɪ.tri/The application of scientific techniques and methods to the study of archaeological materials and artifacts.
archeozoic
adjectivenounVery Rare
/ˌɑːkɪəˈzəʊɪk/Relating to the earlier part of the Precambrian eon, the era of early geological time (approximately 4 to 2.5 billion years ago) when the earliest known life forms appeared.
archeptolemus
nounC2
/ɑːkɛpˈtɒlɪməs/In Greek mythology, a Trojan charioteer, son of Iphitos, who fought in the Trojan War and was killed by Teucer.
archer
nounB2
/ˈɑː.tʃə(r)/A person who shoots arrows with a bow.
archerfish
nounLow frequency
/ˈɑːtʃəfɪʃ/A small tropical freshwater fish (family Toxotidae) known for shooting down insects above the water's surface with a precise jet of water from its mouth.
archery
nounB2
/ˈɑː.tʃər.i/The sport, practice, or skill of shooting arrows with a bow.
arches
plural-nounB1
/ˈɑːtʃɪz/A curved structure over an opening or space, often used to support weight.

Showing 6421–6440 of 8734 words.