noun, plural in form but singular in construction
Gem·​i·​ni | \ ˈje-mə-(ˌ)nē How to pronounce Gemini (audio) , -ˌnī; ˈge-mə-ˌnē \

Definition of Gemini

1 : the third zodiacal constellation that is pictorially represented as the twins Castor and Pollux sitting together, that is visible in the sky on the opposite side of the Milky Way from Taurus and Orion, and that is located between Cancer and Taurus in the zodiac
2a : the third sign of the zodiac in astrology — see Signs of the Zodiac Table
b : one born under the sign of Gemini

First Known Use of Gemini

14th century, in the meaning defined at sense 1

History and Etymology for Gemini

Latin (genitive Geminorum), literally, the twins (Castor and Pollux)

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Time Traveler for Gemini

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

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Cite this Entry

“Gemini.” Dictionary, Merriam-Webster, Accessed 15 Jun. 2021.

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English Language Learners Definition of Gemini

: the third sign of the zodiac that comes between Taurus and Cancer and has a pair of twins as its symbol
: a person born under the sign of Gemini : a person born between May 21st and June 21st


Gem·​i·​ni | \ ˈje-mə-nē How to pronounce Gemini (audio) , -ˌnī \

Kids Definition of Gemini

1 : a constellation between Taurus and Cancer usually pictured as twins sitting together
2 : the third sign of the zodiac or a person born under this sign

More from Merriam-Webster on Gemini

Nglish: Translation of Gemini for Spanish Speakers

Britannica English: Translation of Gemini for Arabic Speakers


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