Speakur

Word Pronunciation & Dictionary

astro-

Word Rarity Rare

Frequency: Zipf frequency 3.23 in modern English

Syllables
as-tro-
IPA
5
Scrabble Score
5
Letters
3
Syllables
5
Unique Chars

Meaning

prefix

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

prefix

Combining form of star.

Example Sentences

Etymology

Etymology tree Proto-Indo-European *h₂eHs- Proto-Indo-European *-tḗr Proto-Indo-European *h₂stḗr Proto-Hellenic *astḗr Ancient Greek ἀστήρ (astḗr) Ancient Greek ᾰ̓́στρον (ắstron)der. English astro- From Ancient Greek ἄστρον (ástron, “celestial body”).

Origin

Word Breakdown

  • Root: ἄστρον

Derived Forms

astrogation astrolabe astrologer astrology astronaut astronautics astronomical astronomer astronomy astrophysics

Frequently Paired Words

aster

Questions

What does astro- mean?
celestial bodies: fixed stars, wandering stars (planets), etc.; space; astronomy
Where does astro- come from?
It is traced to Ancient Greek.

How to pronounce astro-

  1. Open the pronunciation page — Open the Speakur entry for “astro-”.
  2. Read the phonetic spelling — Read the IPA spelling () so you know which sounds to aim for.
  3. Play the audio — Click Play to hear reference audio for “astro-”.
  4. Repeat and practice — Say “astro-” aloud, matching stress and vowels until it feels natural.