astro-

prefix

celestial bodies: fixed stars, wandering stars (planets), etc.; space; astronomy

“astro- + centric → astrocentric”

OriginAncient Greek ᾰ̓́στρον (ắstron) ← Proto-Hellenic *astḗr ← Proto-Indo-European *h₂stḗr →
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Meanings

prefix
  1. celestial bodies: fixed stars, wandering stars (planets), etc.; space; astronomy
  2. in compoundsCombining form of star.

    astro- + centric → astrocentric

Synonyms & antonyms

Also see
stello-

Origin

  1. Proto-Indo-European*h₂eHs-
  2. Proto-Indo-European*h₂stḗr
  3. Proto-Hellenic*astḗr
  4. Ancient Greekἀστήρ (astḗr)
  5. Ancient Greekᾰ̓́στρον (ắstron)
  6. Englishastro-

From Ancient Greek ἄστρον (ástron, “celestial body”).

More words from Ancient Greek

Full word history & related roots →

Translations

Catalan astro-
  • astro-celestial bodies
Czech astro-
  • astro-celestial bodies
Finnish astro-
  • astro-celestial bodies
French astro-
  • astro-celestial bodies
German astro-
  • astro-celestial bodies
Italian astro-
  • astro-celestial bodies
Polish astro-
  • astro-celestial bodies
Portuguese astro-
  • astro-celestial bodies
Russian астро-
  • астро- (astro-)celestial bodies
Spanish astro-
  • astro-celestial bodies
Cite this entry
APA

astro-. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/astro-

MLA

“astro-.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/astro-. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “astro-,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/astro-.

Source: astro- on Wiktionary, CC BY-SA 4.0.