- Alexandretta
- Alexandria
- Alexandrian
- Alexandrina
- Alexandrine
- Alexandrinus
- alexandrite
- Alexandroupolis
- Alexandroúpolis
- alexia
- Alexian
- Alexiares
- Alexicacus
- alexin
- alexipharmic
- Alexis
- Alexis Mikhailovich
- Alexis Nikolayevich
- alexithymia
- Alexius I
- Alexius I Comnenus
- aleyard
- alf
- Alf
- ALF
- Alfa
- alfalfa
- alfalfa butterfly
- alfalfa weevil
- Al Farabi
- al-Farabi
- Alfaro
- Al Fatah
- al Fayed
- Alfheim
- Alfie
- Alfieri
- alfilaria
- al fine
- alfisol
- Alföld
- Alfonso I
- Alfonso V
- Alfonso VI
- Alfonso X
- Alfonso XII
- Alfonso XIII
- Alford plea
- alforja
- Alfred
- Alfred the Great
- alfresco
- Alfur
- al-Fustat
- Alfvén
- Alfvén wave
- alg.
- Alg.
- alga
- algae
- Algar
- Algaroth powder
- algarroba
- Algarve
- algebra
- algebraic
- algebraically closed field
- algebraic equation
- algebraic expression
- algebraic extension
- algebraic function
- algebraic geometry
- algebraic notation
- algebraic number
- algebraic operation
- algebraic topology
- algebraist
- algebra of sets
- Algeciras
- Alger
- Alger, Horatio, Jr.
- Algeria
- Algerian
- Algerian stripe
- algerienne
- algerine
- Algerine
- Algernon
- algesia
- algesimeter
- algetic
- Al-Ghazzali
- Alghero
- algicide
- algid
- Algie
- Algiers
- algin
- alginate
- algin fiber
- alginic acid
- algo
- algo-
- algoid
- Algol
- ALGOL
- algolagnia
- algology
- algometer
- Algonkian
- Algonkin
- Algonquian
- Algonquin
- Algonquin Park
- algophagous
- algophobia
- algor
- algorism
- algorithm
- algorithmic language
- algraphy
- Algren
- algum
- Algy
- Alhambra
- Alhambresque
- Alhazen
- Al Hijrah
- Al Hudaydah
- Al Hufuf
- Ali
- Ali, Muhammad
- Aliákmon
- alias
- alias dictus
- aliasing
- Ali Baba
- alibi
- alible
- Alicante
- Alice
- Alice's Adventures in Wonderland
- Alice band
- Alice blue
- Alice-in-Wonderland
- Alice Springs
- Alicia
- Alick
- alicyclic
- alidade
- alien
- alienable
- alienage
- Alien and Sedition Acts
- alienate
- alienated
- alienation
- alienation of affections
- alienee
- alieni generis
- alieni juris
- alienism
- alienist
- alienor
- alif
- aliform
- Aligarh
- alight
- alighting gear
- align
- aligned
- aligning punch
- alignment
- aligoté
- alike
- aliment
- alimentary
- alimentary canal
- alimentation
- alimentative
- alimony
- aline
- Aline
- A-line
- alinotum
- Alioth
- Ali Pasha
- aliped
- aliphatic
- alipterion
- aliquant
- Aliquippa
- aliquot
- alison
- Alison
- Alissa
- alist
- A list
- alis volat propriis
- alit
- aliterate
- a little
- a little bird
- a little knowledge
- A little learning is a dangerous thing
- aliturgical
- aliunde
- alive
- alive and kicking
- alive to
- alive with
- aliyah
- alizarin
- alizarin crimson
- alk.
- alkahest
- alkalemia
- alkalescent
- alkali
- alkali blue
- alkalic
- alkali feldspar
- alkali flat
- alkalify
- alkali grass
- alkali-loving
- alkali metal
- alkali metaprotein
- alkalimeter
- alkalimetry
- alkaline
- alkaline earth
- alkaline-earth metal
- alkaline hydrolysis
- alkaline phosphatase
- alkaline soil
- alkalinity
- alkali rock
- alkali soil
- alkalize
- alkaloid
- alkaloidal
- alkalosis
- alkane
- alkane series
- alkanet
- alkanethiol
- alkannin
- alkapton
- alkaptonuria
- alkekengi
- alkene
- alkene series
- alkermes
- Alkmaar
- alko
- Alkoran
- alkoxide
- alkoxy
- alky
- alkyd
- alkyd resin
- alkyl
- alkylate
- alkylating agent
- alkylating drug
- alkylation
- alkyl group
- alkyl halide
- alkylic
- alkyne
- alkyne series
- all
- all-
- all'antica
- all'ottava
- all' ottava
- all's fair in love and war
- All's fair in love and war
- all's well that ends well
- All's well that ends well
- All's Well That Ends Well
- alla breve
- Allah
- Allahabad
- Allahu Akbar
- all along
- all along the line
- allamanda
- alla marcia
- all-American
- Allan
- Allan-a-Dale
- all and sundry
- All animals are equal, but some animals are more equal than others
- allanite
- allantoic
- allantoid
- allantoin
- allantois
