or as·tro·nom·ic

[as-truh-nom-i-kuh l or as-truh-nom-ik]


of, relating to, or connected with astronomy.
extremely large; exceedingly great; enormous: It takes an astronomical amount of money to build a car factory.

Origin of astronomical

1550–60; < Latin astronomic(us) (< Greek astronomikós; see astronomy, -ic) + -al1
Related formsas·tro·nom·i·cal·ly, adverbnon·as·tro·nom·ic, adjectivenon·as·tro·nom·i·cal, adjectivenon·as·tro·nom·i·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for astronomically

astronomically, celestially, cosmically

Examples from the Web for astronomically

Contemporary Examples of astronomically

Historical Examples of astronomically

British Dictionary definitions for astronomically




enormously large; immense
of or relating to astronomy
Derived Formsastronomically, adverb
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

Word Origin and History for astronomically



1550s, from astronomy + -ical. Popular meaning "immense, concerning very large figures" (as sizes and distances in astronomy) is attested from 1899. Astronomical unit (abbreviation A.U.) "mean distance from Earth to Sun," used as a unit of measure of distance in space, is from 1909. Related: Astronomically.

Online Etymology Dictionary, © 2010 Douglas Harper