From The Collaborative International Dictionary of English v.0.44 [gcide]:
Astronomical \As'tro*nom"ic*al\ (-[i^]*kal), adjective [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}, adverb
{Astronomical clock}. See under {Clock}.
{Astronomical day}. See under {Day}.
{Astronomical fractions}, {Astronomical numbers}. See under {Sexagesimal}.
From WordNet (r) 2.0 [wn]:
adjective
1: relating or belonging to the science of astronomy; "astronomic telescope" [syn: {astronomic}]
2: inconceivably large [syn: {astronomic}, {galactic}]
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
98 Moby Thesaurus words for "astronomical": Atlantean, Brobdingnagian, Cyclopean, Cynthian, Gargantuan, Herculean, Homeric, abysmal, amplitudinous, anagalactic, asteroidal, astral, astrologic, astrologistic, astrologous, astronomic, astrophysical, awesome, boundless, bulky, celestial, circumplanetary, cislunar, colossal, cosmic, elephantine, empyreal, empyrean, enormous, epic, equinoctial, extensive, extragalactic, galactic, giant, giantlike, gigantic, heavenly, heliacal, heroic, huge, immeasurable, immense, infinite, intercosmic, interplanetary, intersidereal, interstellar, jumbo, king-size, large, lunar, lunary, lunate, lunular, lunulate, mammoth, massive, massy, meteoric, meteoritic, mighty, monster, monstrous, monumental, mountainous, nebular, nebulose, nebulous, outsize, overgrown, planetal, planetarian, planetary, planetesimal, prodigious, profound, semilunar, sidereal, sizable, solar, spacious, sphery, star-spangled, star-studded, starry, stellar, stellary, stupendous, terrestrial, titanic, towering, tremendous, uranic, vast, voluminous, weighty, zodiacal
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