Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of or relating to astronomy.
  • adjective Of enormous magnitude; immense.

from The Century Dictionary.

  • Pertaining or related to astronomy; connected with or relating to astronomic observation or research.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Of or pertaining to astronomy; in accordance with the methods or principles of astronomy.
  • adjective See under Clock.
  • adjective See under Day.
  • adjective See under Sexagesimal.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective not comparable Of or relating to astronomy.
  • adjective comparable Very large; of vast measure.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective relating or belonging to the science of astronomy
  • adjective inconceivably large

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Attested since at least 1550, from Middle French astronomique or directly from Latin astronomicus, from Ancient Greek ἀστρονομικός.

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