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astro-

1.
a combining form with the meaning “pertaining to stars or celestial bodies, or to activities, as spaceflight, taking place outside the earth's atmosphere,” used in the formation of compound words:
astronautics; astrophotography.
Compare cosmo-.
Origin
< Greek, combining form of ástron a star, constellation, akin to astḗr star; cf. aster, -aster2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for astro
  • Third, macro photography ranks up there with astro photography for difficulty in getting everything right.
  • We would call astro-horror a subset sci-fi horror proper, which has much wider parameters.
  • There's some non-astro bits, but it's quite smashing.
British Dictionary definitions for astro

astro-

combining form
1.
indicating a heavenly body, star, or star-shaped structure: astrology, astrocyte
2.
indicating outer space: astronautics
Word Origin
from Greek, from astron star
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for astro

astro-

element active in English word formation from mid-18c. and meaning "star or celestial body; outer space," from Greek astro-, stem and comb. form of astron "star," related to aster "star" (see star (n.)). In ancient Greek, aster typically was "a star" and astron mostly in plural, "the stars." In singular it mostly meant "Sirius" (the brightest star).

Online Etymology Dictionary, © 2010 Douglas Harper
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astro in Science
astro-  
A prefix that means "star" (as in astrophysics), "celestial body" (as in astronomy), or "outer space" (as in astronaut).
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Related Abbreviations for astro

ASTRO

American Society for Therapeutic Radiology and Oncology
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Difficulty index for astro-

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Word Value for astro

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