- ancilla
- ancillary
- ancipital
- ancon
- ancona
- ancré
- ancylo-
- ancylostomiasis
- and
- and all
- and how!
- and so forth
- and the like
- and then some
- and/or
- andalusite
- andamento
- andante
- andantino
- andesine
- andesite
- andiamo
- andiron
- andoroba
- andouille
- andr-
- andradite
- andragogy
- andro-
- androcentric
- androclinium
- androconium
- androcracy
- androdioecious
- androecium
- androgen
- androgen insensitivity syndrome
- androgenesis
- androgenous
- androgyne
- androgynophore
- androgynous
- androgyny
- android
- andrology
- andromeda
- andromonoecious
- andron
- andropause
- androphile
- androphobia
- androphore
- androsace
- androsphinx
- androspore
- androsterone
- ane
- anear
- anecdata
- anecdotage
- anecdotal
- anecdotally
- anecdote
- anecdotic
- anecdotist
- anecdysis
- anechoic
- anelace
- anelasticity
- anele
- anelectric
- anemia
- anemic
- anemo-
- anemochore
- anemochorous
- anemochory
- anemogram
- anemograph
- anemography
- anemology
- anemometer
- anemometry
- anemone
- anemone fish
- anemophilous
- anemoscope
- anemosis
- anemotaxis
- anemotropism
- anencephalic
- anencephaly
- anenst
- anent
- anepigraphic
- anergy
- aneroid
- aneroid barograph
- aneroid barometer
- aneroid capsule
- anes
- anesthesia
- anesthesimeter
- anesthesiologist
- anesthesiology
- anesthetic
- anesthetist
- anesthetize
- anestrous
- anestrus
- anethole
- aneuch
- aneuploid
- aneuploidy
- aneuria
- aneurin
- aneurysm
- anew
- anfractuosity
- anfractuous
- anga
- angakok
- angary
- angashore
- angel
- angel bed
- angel cake
- angel dust
- angel food cake
- angel gear
- angel hair
- angel investor
- angel light
- angel number
- angel shark
- angel's share
- angel's tears
- angel's-trumpet
- angelfish
- angelhood
- angelic
- angelica
- angelica tree
- angelique
- angelology
- angels
- angels-on-horseback
- anger
- anger management
- angerly
- angi-
- angina
- angina pectoris
- anginal
- angio-
- angioblast
- angiocardiography
- angiocarp
- angiocarpous
- angioedema
- angiogenesis
- angiogenin
- angiogram
- angiography
- angiokeratoma
- angiology
- angioma
- angioplasty
- angiosarcoma
- angiosperm
- angiospermous
- angiostatin
- angiotensin
- angiotensin receptor blocker
- angiya
- anglaise
- angle
- angle board
- angle bracket
- angle cleat
- angle iron
- angle of advance
- angle of attack
- angle of bank
- angle of climb
- angle of depression
- angle of deviation
- angle of dip
- angle of elevation
- angle of friction
- angle of incidence
- angle of lag
- angle of lead
- angle of pitch
- angle of reflection
- angle of refraction
- angle of repose
- angle of roll
- angle of slide
- angle of view
- angle of yaw
- angle plate
- angle shot
- angle-closure glaucoma
- angle-off
- angled
- angledozer
- angledug
- anglepod
- angler
- anglerfish
- anglesite
- anglesmith
- angletwitch
- anglewing
- angleworm
- anglicize
- angling
- angon
- angophora
- angor
- angora
- angostura bark
- angrily
- angry
- angry young man
- angst
- angstrom
- angsty
- anguilliform
- anguine
- anguish
- anguished
- angular
- angular acceleration
- angular deformation
- angular diameter
- angular dispersion
- angular displacement
- angular frequency
- angular house
- angular leaf spot
- angular magnification
- angular measure
- angular momentum
- angular velocity
- angularity
- angulate
- angulation
- angulous
- angwantibo
- anharmonic
- anhedonia
- anhedral
- anhidrosis
- anhidrotic
- anhinga
- anhyd.
- anhydr-
- anhydremia
- anhydride
- anhydrite
- anhydro-
- anhydrous
- ani
- anianiau
- anicca
- aniconic
- aniconism
- anigh
- anil
- anile
- anilide
- aniline
- aniline black
- aniline dye
- aniline hydrochloride
- anilingus
- anim.
- anima
- animadversion
- animadvert
- animal
- animal behavior
- animal black
- animal charcoal
- animal companion
- animal control
- animal control officer
- animal cracker
- animal faith
- animal heat
- animal husbandry
- animal kingdom
- animal magnetism
- animal park
- animal pole
- animal rights
- animal shelter
- animal spirits