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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)

angular magnification
nounC2
/ˈæŋɡjʊlə(r) ˌmæɡnɪfɪˈkeɪʃ(ə)n/A dimensionless measure used in optics to quantify how much larger an object appears through an optical instrument (like a telescope or microscope) compared to viewing it with the naked eye from a standard reference distance. It is defined as the ratio of the angle subtended at the eye by the image to the angle subtended at the eye by the object when viewed directly.
angular measure
nounC2
/ˈæŋɡjʊlə ˈmɛʒə/The measurement of an angle, typically expressed in units such as degrees, radians, or grads.
angular momentum
nounLow/Technical
/ˈæŋɡjʊlə məʊˈmentəm/A vector quantity representing the rotational inertia and velocity of a rotating body or system, conserved in the absence of external torque.
angular velocity
nounLow
/ˈæŋɡjələ vɪˈlɒsɪti/The rate at which an object rotates or revolves around an axis, measured in angle per unit time (typically radians per second).
angularity
nounC2
/ˌæŋɡjʊˈlærəti/The quality or state of having angles or sharp corners; the condition of being angular.
angulate
adjectiveverbC1
/ˈæŋɡjʊleɪt/Having angles or corners; forming an angle.
angulation
nounC2/Proficient
/ˌæŋ.ɡjʊˈleɪ.ʃən/The formation or state of having angles; the precise arrangement of angles between lines, planes, or surfaces.
angus
nounC2
/ˈæŋɡəs/A breed of beef cattle, originally from Scotland, known for being hornless and typically black.
angus og
nounVery Low
/ˌæŋɡəs ˈɒɡ/A name, specifically a historical and mythological figure; traditionally refers to a deity in Irish mythology, also used as a personal name.
angwantibo
nounVery Low
/aŋˈɡwɒntɪbəʊ/A small, nocturnal African primate with a golden-orange body and a pointed snout.
anhalt
nounC1
/ˈænhælt/A stop, cessation, or break in continuity; an interruption or suspension of an activity or process.
anhedonia
nounLow
/ˌanhiːˈdəʊnɪə/The inability to feel pleasure from activities that would normally be enjoyable.
anhedral
adjectivenounVery low
/ænˈhiːdrəl/The downward angle of an aircraft wing relative to the horizontal, designed to enhance stability.
anhidrosis
nounC2
/ˌæn.hɪˈdrəʊ.sɪs/A medical condition characterized by the inability to sweat normally.
anhidrotic
adjectivenounVery Low
/ˌanhɪˈdrɒtɪk/Relating to or characterized by an absence of sweating.
anhinga
nounC2
/ænˈhɪŋɡə/A large waterbird, also called the snakebird or darter, found in warm regions, known for swimming with its body submerged and only its snake-like neck visible.
anhui
nounC2
/ˌænˈhweɪ/A province located in eastern China.
anhydremia
nounC2
/ˌænhaɪˈdriːmiə/An abnormal decrease in the volume of fluid part of the blood.
anhydride
nounC2
/ænˈhaɪ.draɪd/A chemical compound formed by the removal of water from another compound, particularly acids.
anhydrite
nounC2
/ænˈhaɪdraɪt/A white or colourless mineral consisting of anhydrous calcium sulfate (CaSO₄), found in sedimentary rock deposits.

Showing 4921–4940 of 8734 words.