English Dictionary

C19

noun

The nineteenth century; the 1800s. / COVID-19. / A astronomical term that describes grouping of stars in the Milky way galaxy halo that are 2,500 times lower than the sun

C19 refers to the period of time known as the nineteenth century.

意味（1）

The nineteenth century; the 1800s.

意味（2）

COVID-19.

C19 food supply disruptions […] C19 travel restrictions

意味（3）

A astronomical term that describes grouping of stars in the Milky way galaxy halo that are 2,500 times lower than the sun