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Definition of astro- combining form from the Oxford Advanced Learner's Dictionary

astro-

combining form

/æstrəʊ/,

/æstrə/,

/əˈstrɒ/

/æstrəʊ/,

/æstrə/,

/əˈstrɑː/

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(in nouns, adjectives and adverbs) relating to the stars or outer space
- astronaut
- astrophysics
Word Originfrom Greek astron ‘star’.

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See astro- in the Oxford Advanced American Dictionary

Check pronunciation: astro-

Nearby words

adverb

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OPAL spoken words

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