1A large northern constellation (the Whale), said to represent the sea monster which threatened Andromeda. It contains the variable star Mira, but no other bright stars.

1. 1.1as genitive Ceti /ˈsiːti/ Used with preceding letter or numeral to designate a star in the constellation Cetus.
   与其前面的字母或数字连用以标记该星座中的星鲸鱼星座的
   the star Tau Ceti

   鲸鱼座τ星。