axilla

aviation

awkward

avert

avenue

avenge

available

availability

avail

auxiliary

autopsy

autonomy

autoclave

authorize

authority

authoritative

authoritarian

authentic

Austria

auspice

auscultate

aural

augment

auditorium

audiometer

audience

attractive

audible

auction

attraction

atypical

attract

attic

attenuate

attendant

attempt

attachment

attach

atropine

asymmetric(al)

astronomy

astronaut

astonish

asthma

assort

association

astound

associate

assistant

assistance

assimilate

assignment

assign

assiduity

asset

assess

assertion

assert

assassinate

assessment

assault

assembly

assemble

ashamed

aseptic

ascertain

aspirate

asphyxia

articulate

articular

arthritis

artery

array

arrogant

arrogance

arrest

arrangement

aroma

arrhythmia

armament

argumentation

architecture

argue

arena

arduous

architect

ardent

architectural

archaeology

arbitrary

arch

apt

apron

approximate

approve

approval

appropriate

approach

apprehend

appreciative

appreciation

appreciate

appreciable

appraisal

appraiser

appraise

appoint

appliance

applause

applaud

appointment

appetite

appendix

appendicitis

appalling

apparatus

anxiety

antivirus

antiviral

apparent

antitoxin

antiseptic

antique

antifebrile

anticipate

antibiotics

antenna

antacid

anoxia

anorexia

anonymous

annoyance

annoy

animate

anhydrous

anguish

anesthetic

anesthesia

animation

anemia

ancient

ancestor

anatomy

analyze

ancestry

ancestral

analogy

analogue

analysis

amusement

amuse

amputate

ample

ammonia

amid

amiable

amend

amenable

ameliorate

ambulant

ambulance

ambiguous

ambient

ambassador

amateur

alveolus

aluminum

alphabet

alloy

allowance

almighty

allure

allude

alliance

alleviate

alga

ague

agony

agitate

agile

aggressive

affiliate

afflict

affinity

afferent

affection

afebrile

aerobic

advocate

advisory

admonish

adequate

adduce

addict

acupuncture

acquaint

acoustic

acne

acknowledgement

acknowledge

acidosis

achromatopsia

accuse

accountant

accordance

accessory

accent

absurd

abstinence

abstain

abscess

abortion

ablate

aberrant

abrade

abate