as·trol·o·gy
ə-ˈsträ-lə-jē 
1
: the divination of the supposed influences of the stars and planets on human affairs and terrestrial events by their positions and aspects
2
archaic
: astronomy
as·tro·log·i·cal
¦a-strə-¦lä-ji-kəl
variants
or less commonly astrologic
¦a-strə-¦lä-jik
: of or belonging to astrology : professing astrology
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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
Valerie Mesa, PEOPLE, 15 June 2026
Collections typically include motifs that were dear to Coco Chanel herself, including her favorite Camelia flowers, stars and comets referencing her interest in astrology, and No. 5, her lucky number.
—Kate Matthams, Forbes.com, 10 June 2026
The cocktail menu blends astrology and biodynamics, with drinks revolving around cosmic rhythms.
—Lane Nieset, Condé Nast Traveler, 4 June 2026
White was into astrology and meditation and numerology and Egyptology and a lot of the hippie metaphysics that flourished in California in the ’70s.
—Owen Gleiberman, Variety, 4 June 2026
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Noun
During an exclusive astrology reading for the PEOPLE App, the In the City star opened up about the major changes she’s experienced over the past year, from moving to New York and joining the Bravo series to the launch of her business venture.
—Valerie Mesa, PEOPLE, 15 June 2026
Collections typically include motifs that were dear to Coco Chanel herself, including her favorite Camelia flowers, stars and comets referencing her interest in astrology, and No. 5, her lucky number.
—Kate Matthams, Forbes.com, 10 June 2026
The cocktail menu blends astrology and biodynamics, with drinks revolving around cosmic rhythms.
—Lane Nieset, Condé Nast Traveler, 4 June 2026
White was into astrology and meditation and numerology and Egyptology and a lot of the hippie metaphysics that flourished in California in the ’70s.
—Owen Gleiberman, Variety, 4 June 2026
See All Example Sentences for astrology
Cite this Entry
“Astrology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/astrology. Accessed 17 Jun. 2026.
Copy CitationKids Definition
astrology
noun
as·trol·o·gy
ə-ˈsträl-ə-jē
: the study of the supposed influences of the stars on human affairs by their positions in relation to each other
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