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Pronunciation:  `astru'nâmikul

WordNet Dictionary
  1. [adj]  inconceivably large
  2. [adj]  relating or belonging to the science of astronomy; "astronomic telescope"

ASTRONOMICAL is a 12 letter word that starts with A.


 Synonyms: astronomic, astronomic, big, galactic, large



Webster's 1913 Dictionary
\As`tro*nom"ic*al\ (-[i^]*kal), a. [L.
astronomicus, Gr. 'astronomiko`s: cf. F. astronomique.]
Of or pertaining to astronomy; in accordance with the methods
or principles of astronomy. -- {As`tro*nom"ic*al*ly}, adv.

{Astronomical clock}. See under {Clock}.

{Astronomical day}. See under {Day}.

{Astronomical fractions}, {Astronomical numbers}. See under

Thesaurus Terms
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