Go to 'thermo-' entry Go to 'dino-' entry Go to 'chondro-' entry Go to 'aero-' entry Go to '-logy' entry Go to 'thaumato-' entry Go to 'nano-' entry Go to '-sophy' entry Go to 'bucco-' entry Go to '-ism' entry Go to '-lysis' entry Go to 'galacto-' entry Go to '-anthropy' entry Go to 'pneumo-' entry Go to '-ploitation' entry Go to '-lithic' entry Go to '-sepalous' entry Go to 'onco-' entry Go to '-parous' entry Go to 'dermato-' entry Go to 'multi-' entry Go to 'dodeca-' entry Go to '-zoon' entry Go to 'vermi-' entry Go to 'crystallo-' entry Go to 'biblio-' entry Go to 'eco-' entry Go to 'juxta-' entry Go to 'facio-' entry
Affixes: the building blocks of English
Affixes: the building blocks of English
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astr(o)-

A star or other celestial body; outer space; star-shaped.

[Greek astron, star.]

Common examples include astronomy (Greek nomos, law) and astrology (Greek logos, discourse). Astrophysics is the study of the nature of stars and other celestial bodies; an astronaut (Greek nautēs, a sailor) is a person trained to travel in a spacecraft. Some imply that a thing has points like the conventional representation of a star: an astrocyte is a star-shaped glial cell of the central nervous system; and an astroid is a hypocycloid with four cusps, shaped like a square with concave sides.

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