as·​trol·​o·​gy ə-ˈsträ-lə-jē How to pronounce astrology (audio)
: the divination of the supposed influences of the stars and planets on human affairs and terrestrial events by their positions and aspects
archaic : astronomy
astrological adjective
astrologically adverb

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The Difference Between Astronomy and Astrology

Some may find it easy to confuse astronomy and astrology. At one time, these two words actually were synonymous (that is, astronomy once meant what astrology means today), but they have since moved apart from each other. In current use, astronomy is concerned with “the study of objects and matter outside the earth's atmosphere,” while astrology is the purported divination of how stars and planets influence our lives. Put bluntly, astronomy is a science, and astrology is not.

Examples of astrology in a Sentence

Recent Examples on the Web In astrology, Aries (Reese Witherspoon’s Sun Sign) is associated with courage, passion, war and breaking new ground. Valerie Mesa, Peoplemag, 12 July 2024 Every Friday, our resident witch Roya Backlund will answer your most vulnerable conundrums through the lens of astrology, Tarot, and spirituality. Roya Backlund, StyleCaster, 12 July 2024 In astrology, Mercury retrograde symbolizes change and often interrupts the normal flow of life, Caves reveals. Olivia Munson, USA TODAY, 9 July 2024 The site is a veritable encyclopedia of beginner astrology with tons of information and explanations. Emily Newhouse, Allure, 4 July 2024 See all Example Sentences for astrology 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'astrology.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Middle English astrologie "study of celestial bodies, prediction by observing the configuration of celestial bodies," borrowed from Middle French & Latin; Middle French astrologie, borrowed from Latin astrologia "study of celestial bodies," borrowed from Greek astrología, from astro- astro- + -logia -logy

First Known Use

14th century, in the meaning defined at sense 2

Time Traveler
The first known use of astrology was in the 14th century

Dictionary Entries Near astrology

Cite this Entry

“Astrology.” Dictionary, Merriam-Webster, Accessed 21 Jul. 2024.

Kids Definition


as·​trol·​o·​gy ə-ˈsträl-ə-jē How to pronounce astrology (audio)
: the study of the supposed influences of the stars on human affairs by their positions in relation to each other
astrological adjective
astrologically adverb
Last Updated: - Updated example sentences
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