as·​trol·​o·​gy | \ə-ˈsträ-lə-jē \

Definition of astrology 

1 archaic : astronomy

2 : the divination of the supposed influences of the stars and planets on human affairs and terrestrial events by their positions and aspects

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Other Words from astrology

astrological \ˌas-​trə-​ˈlä-​ji-​kəl \ adjective
astrologically \-​k(ə-​)lē \ adverb

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

This has been the year when astrology memes officially became both unavoidable and uncomfortably relatable. Diana Budds, Curbed, "Based on your zodiac sign, what should your Halloween costume be?," 10 Oct. 2018 In medieval astrology, this region was linked to places and people outside of your village. Aliza Kelly Faragher, Allure, "The 12 Astrological Houses: Interpreting Your Birth Chart Beyond the Zodiac," 6 Oct. 2018 Other tweets have taken on such diverse topics as heteronormativity, astrology, sexuality, toxic masculinity, clothing theft, crowdsurfing, manspreading, therapy, and Ariana Grande's new album Sweetener. Emily Wang, Teen Vogue, "Twitter Turned "To All the Boys I've Loved Before" Into a Meme," 27 Aug. 2018 But remember that astrology is a magical and helpful guide, rather than a scientific rulebook set in stone, so don't let a retrograde squash your dreams. Sophie Saint Thomas, Allure, "How Mars Retrograde Will Affect Your Love Life and Career This Summer," 2 July 2018 Many Capricorns feel that they are poorly represented in astrology and that the whole thing is silly, which is honestly just so Capricorn. Sophie Saint Thomas, Allure, "What Your Zodiac Sign Says About Your Online Dating Style," 6 July 2018 So Many People Care What’s the difference between astrology and astronomy? Olivia B. Waxman, Time, "Where Do Zodiac Signs Come From? Here's the True History Behind Your Horoscope," 21 June 2018 After all, a 2014 National Science Foundation poll found more than half of millennials think astrology is a science. Olivia B. Waxman, Time, "Where Do Zodiac Signs Come From? Here's the True History Behind Your Horoscope," 21 June 2018 The number eight, with its symmetrical shape, represents prosperity, never ending flow and ideal balance, according to Chinese astrology. Janet Eastman,, "$4 million feng shui mansion designed to maximize good fortune (photos)," 6 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'astrology.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of astrology

14th century, in the meaning defined at sense 1

History and Etymology for astrology

Middle English astrologie, from Middle French, from Latin astrologia, from Greek, from astr- + -logia -logy

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Statistics for astrology

Last Updated

19 Nov 2018

Look-up Popularity

Time Traveler for astrology

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

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More Definitions for astrology



English Language Learners Definition of astrology

: the study of how the positions of the stars and movements of the planets have a supposed influence on events and on the lives and behavior of people


as·​trol·​o·​gy | \ə-ˈsträ-lə-jē \

Kids Definition of astrology

: the study of the supposed influences of the stars and planets on people's lives and behavior

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More from Merriam-Webster on astrology

Spanish Central: Translation of astrology

Nglish: Translation of astrology for Spanish Speakers

Britannica English: Translation of astrology for Arabic Speakers Encyclopedia article about astrology

Comments on astrology

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