- astriction
- astrictive
- astride
- astringe
- astringency
- astringent
- astrobiology
- astroblast
- astrobotany
- astrocentre
- astrochemistry
- astroclereid
- astrocytoma
- astrodome
- astrodynamics
- astrogeodesy
- astrogeodetic network
- astrogeodetic point
- astrogeology
- astrograph
- astrographic camera
- astroid
- astrolabe
- astrologer
- astrologic
- astrological
- astrology
- astrometeorology
- astrometer
- astrometry
- astromic equator
- astronaut
- astronautic
- astronautics
- astronomer
- astronomic
- astronomic day
- astronomic point
- astronomic telescope
- astronomical
- astronomical almanac
- astronomical azimuth
- astronomical latitude
- astronomical nutation
- astronomical reference
- astronomical refraction
- astronomical table
- astronomical telescope
- astronomical time
- astronomical traverse
- astronomical triangle
- astronomy
- astronomy satellite
- astrophotocamera
- astrophotography
- astrophysical
- astrophysics
- astropyle
- astrosphere
- astucious
- astute
- astutely
- astuteness
- astylar
- asunder
- aswarm
- aswoon
- asyllabic
- asylum
- asymbolia
- asymetric measure
- asymetrix
- asymmetric
- asymmetric anticline
- asymmetric cryptography
- asymmetric device
- asymmetric fold
- asymmetric information
- asymmetric karyotype
- asymmetric network
- asymmetric rim
- asymmetric signal
- asymmetric test
- asymmetric truss
- asymmetrical
- asymmetrical distortion
- asymmetrical effect
- asymmetrical layout
- asymmetrical load
- asymmetrical mode
- asymmetrical modem
- asymmetrical test
- asymmetrical transmission
- asymmetry
- asymmetry factor
- asymptoical distribution
- asymptomatic
- asymptote
- asymptotic
- asymptotic approximation