astr - auto
- astral
- astration
- astroballistic
- astrobiology
- astrobleme
- astrobotany
- astrocamera
- astrochemistry
- astrodome
- astrodynamics
- astroemulsion
- astrogation
- astrogator
- astrograph
- astrolabe
- astrologer
- astrology
- astromechanics
- astrometry
- astron
- astronaut
- astronautics
- astronavigation
- astronomer
- Astronomer Royal
- astronomic(al)
