- aparejo
- apart
- apart from
- apartheid
- aparthotel
- apartment
- apartment hotel
- apartment house
- apartmentize
- apast
- apastron
- apatetic
- apathetic
- apathy
- apatite
- apatosaurus
- ape
- ape hangers
- ape-man
- apeak
- apeman
- aperient
- aperiodic
- aperitive
- apertometer
- aperture
- aperture card
- aperture priority
- aperture synthesis
- aperture-priority
- apery
- aperçu
- apeshit
- apetalous
- apex
- apex predator
- apgar score
- aph.
- aphaeresis
- aphagia
- aphakia
- aphanite
- aphanitic
- aphasia
- aphasic
- aphelandra
- aphelion
- apheliotropic
- apheliotropism
- aphemia
- apheresis
- aphesis
- aphetic
- aphid
- aphid lion
- aphis
- aphonia
- aphonic
- aphorism
- aphorist
- aphoristic
- aphorize
- aphotic
- aphrodisia
- aphrodisiac
- aphtha
- aphthous fever
- aphyllous
- apiaceous
- apian
- apiarian
- apiarist
- apiary
- apical
- apical dominance
- apical meristem
- apices
- apico-
- apicoalveolar
- apicodental
- apicoectomy
- apicomplexan
- apiculate
- apiculture
- apiculus
- apiece
- apiology
- apish
- apivorous
- aplacental
- aplacophoran
- aplanatic
- aplanetic
- aplanogamete
- aplanospore
- aplasia
- aplastic
- aplastic anemia
- aplenty
- aplite
- aplomb
- apmt.
- apnea
- apneic
- apneusis
- apneustic
- apnoea
- apo-
- apoapsis
- apocalypse
- apocalyptic
- apocalypticism
- apocalyptist
- apocarp
- apocarpous
- apocatastasis
- apocenter
- apochromat
- apochromatic
- apocopate
- apocope
- apocrine
- apocrypha
- apocryphal
- apocynaceous
- apocynthion
- apodal
- apodeictic
- apodeipnon
- apodema
- apodeme
- apodictic
- apodosis
- apodous
- apoenzyme
- apoferritin
- apogamy
- apogee
- apogeotropism
- apograph
- apokatastasis
- apolipoprotein
- apolitical
- apollo
- apologetic
- apologetics
- apologia
- apologist
- apologize
- apologue
- apology
- apolune
- apomict
- apomixis
- apomorphine
- apomorphy
- aponeurosis
- apopemptic
- apophasis
- apophony
- apophthegm
- apophyge
- apophyllite
- apophysis
- apoplast
- apoplectic
- apoplectiform
- apoplexy
- apoprotein
- apoptosis
- apopyle
- aporia
- aport
- aposematic
- aposematic coloration
- aposiopesis
- apospory
- apostasy
- apostate
- apostatize
- apostil
- apostilb
- apostle
- apostle bird
- apostle plant
- apostle spoon
- apostlebird
- apostolate
- apostolic
- apostolic age
- apostolic delegate
- apostolic succession
- apostrophe
- apostrophize
- apothecaries' measure
- apothecaries' weight
- apothecary
- apothecary jar
- apothecium
- apothegm
- apothem
- apotheosis
- apotheosize
- apotropaic
- apotropaism
- app
- app.
- appal
- appall
- appalled
- appalling
- appam
- appanage
- appar.
- apparat
- apparatchik
- apparatus
- apparatus criticus
- apparel
- apparent
- apparent candlepower
- apparent magnitude
- apparent movement
- apparent solar day
- apparent temperature
- apparent time
- apparent wind
- apparentement
- apparently
- apparition
- apparitor
- appassionato
- appd.
- appeal
- appeal play
- appealing
- appear
- appear as
- appearance
- appearance money
- appease
- appeasement
- appel
- appellant
- appellate
- appellate division
- appellation
- appellation contrôlée
- appellative
- appellee
- appellor
- append
- appendage
- appendant
- appendectomy
- appendiceal
- appendicectomy
- appendices
- appendicitis
- appendicle
- appendicular
- appendiculate
- appendix
- appendixes
- appentice
- appenzeller
- apperceive
- apperception
- appersonation
- appertain
- appestat
- appetence
- appetency
- appetite
- appetitive
- appetitive behavior
- appetizer
- appetizing
- appl.
- applanate
- applaud
- applaudable
- applause
- apple
- apple a day
- apple bee
- apple blight
- apple blossom
- apple box
- apple brandy
- apple butter
- apple green
- apple maggot
- apple of Peru
- apple of discord
- apple of one's eye
- apple pandowdy
- apple polisher
- apple sauce
- apple sucker