bissextus

/bahy-seks-tuhs, bih-/US // baɪˈsɛks təs, bɪ- //

梭子鱼,梭鱼,梭罗,梭子蟹

Definitions

n.名词 noun

1
- : February 29th: the extra day added to the Julian calendar every fourth year to compensate for the approximately six hours a year by which the common year of 365 days falls short of the solar year.