Pisces Syllabification: (Pis·ces)Pronunciation: /ˈpīsēz, ˈpisēz/Translate Pisces | into French | into German | into Italian | into Spanish Definition of Pisces 1 Astronomy a large constellation (the Fish or Fishes), said to represent a pair of fish tied together by their tails. (as genitive Piscium /ˈpiSHēəm, ˈpīsē-/) used with a preceding letter or numeral to designate a star in this constellation:the star Alpha Piscium 2 Astrology the twelfth sign of the zodiac, which the sun enters about February 20. (a Pisces) (plural same) a person born when the sun is in the sign of Pisces. Derivatives PisceanPronunciation: /-sēən/ noun & adjective sense 2.Origin:Latin, plural of piscis 'fish'Pisces in other Oxford dictionaries Definition of Pisces in the British & World English dictionary