noun, plural in form but singular in construction
Pi·​sces | \ ˈpī-(ˌ)sēz How to pronounce Pisces (audio) also ˈpi-ˌsēz How to pronounce Pisces (audio) or ˈpis-ˌkās How to pronounce Pisces (audio) \

Definition of Pisces

1 : a zodiacal constellation directly south of Andromeda
2a : the 12th sign of the zodiac in astrology — see Signs of the Zodiac Table
b : one born under this sign

First Known Use of Pisces

before the 12th century, in the meaning defined at sense 2

History and Etymology for Pisces

Middle English, from Latin (genitive Piscium), from plural of piscis fish — more at fish

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The first known use of Pisces was before the 12th century

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Cite this Entry

“Pisces.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Pisces. Accessed 6 Mar. 2021.

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English Language Learners Definition of Pisces

: the 12th sign of the zodiac that comes between Aquarius and Aries and is symbolized by a pair of fish
: a person born under the sign of Pisces : a person born between February 19 and March 20


Pi·​sces | \ ˈpī-sēz How to pronounce Pisces (audio) \

Kids Definition of Pisces

1 : a constellation between Aquarius and Aries imagined as two fish
2 : the twelfth sign of the zodiac or a person born under this sign


noun plural
Pis·​ces | \ ˈpī-ˌsēz also ˈpi- \

Medical Definition of Pisces

in some classifications
: a class of vertebrates comprising all the fishes and sometimes the cyclostomes and lancelets

More from Merriam-Webster on Pisces

Nglish: Translation of Pisces for Spanish Speakers

Britannica English: Translation of Pisces for Arabic Speakers

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