Collins English Dictionary: English Words Starting With “A”
- a...a frog in one's throat
- à gogo...a sight
- a sight for sore eyes...aa
- AAA...abator
- abattoir...Abelian group
- abelmosk...ablaut
- ablaze...about turn
- about-ship...absenteeism
- absently...abstraction
- abstractionism...Acadia
- Acadian...acceptance
- acceptant...accomplishment
- accord...accustomed
- Accutron...ACGI
- ach...Acid House
- acid rain...acorn valve
- acorn worm...acrocyanosis
- acrodont...actino-
- actinobacillosis...ACTT
- ACTU...Adam
- Adam's ale...Additional Member System
- additionality...Adi Granth
- adiabatic...administer
- administrate...Adrastus
- adrenal...advance man
- advance notice...advise
- advised...aeolian
- aeolian deposits...aerolite
- aerology...Æthelwulf
- aether...affirmative action
- affirming the consequent...AFRAeS
- afraid...afterbody
- afterbrain...agama
- Agamemnon...agglomerate
- agglutinate...agnathan
- agnathous...Agricola
- agriculture...Ahriman
- Ahura Mazda...air brake
- air bridge...air traffic
- air turbine...airlock
- airmail...Akbar
- akeake...alacrity
- Aladdin...albeit
- Albemarle Sound...alchemy
- alcheringa...aldrin
- Aldus Manutius...alexanders
- Alexandra...algology
- algometer...alit
- aliterate...all his geese are swans
- all in...all-purpose
- all-right...alley cat
- alley gate...allotropy
- allottee...alms
- almshouse...alpha-fetoprotein
- alpha-hydroxy acid...alterative
- altercate...aludel
- alula...amanita
- amantadine...ambience
- ambient...ameloblast
- amelogenesis...American wigeon
- American wirehair...aminophenazone
- aminophenol...amoebiasis
- amoebic dysentery...amphictyony
- amphidentate...Amundsen
- Amundsen Sea...anabaena
- anabantid...anal
- anal canal...ananthous
- anapaest...-ance
- ancestor...Andaman Islands
- Andaman Sea...Andropov
- Andros...anfractuous
- Angara...angle of reflection
- angle of refraction...angstrom
- Ångström...animal starch
- animalcule...ankylosing spondylitis
- ankylosis...annual report
- annual ring...ANOVA
- anovulation...ante-mortem
- ante-post...anthracite
- anthracnose...anti-inflammatory
- anti-inflationary...antidiuretic
- antidiuretic hormone...antimuon
- antimutagen...antiquey
- antiquities...antlike
- antlion...anyway
- anyways...Apennines
- aperçu...aplacental
- aplanatic...apology
- apolune...appalling
- Appaloosa...apple box
- apple butter...appraisal
- appraisal drilling...apse
- apsis...Aquileia
- aquiline...araliaceous
- Aram...arbutus
- arc...archenemy
- archenteron...arcograph
- ARCS...Areopagite
- Areopagus...argumentative
- argumentum ad hominem...arithmetic mean
- arithmetic progression...armillary
- armillary sphere...aromatize
- arose...arrows
- arrowwood...arteriography
- arteriole...artificial intelligence
- artificial kidney...as dull as ditchwater
- as far as...asbestos
- asbestosis...asdic
- -ase...Asian
- Asian flu...Asperger's syndrome
- Asperges...assemblé
- assembler...assize
- assizes...asteriated
- asterisk...astrol.
- astrolabe...at a canter
- at a discount...at long last
- at market...at the top of one's lungs
- at the top of the tree...Athena
- athenaeum...atmometer
- atmosphere...Atreus
- atrioventricular...Attila
- attire...Aubrey
- aubrietia...Augean stables
- augend...auric
- auricle...Australian Capital Territory
- Australian cattle dog...auto-da-fé
- auto-repeat...Autolycus
- autolyse...autotomy
- autotoxaemia...avdp.
- ave...Avlona
- AVM...awl
- awlwort...Aydin
- aye...azole
- azonal soil...azygous