It is the English name for Generation Z, people born in the first decade of the twenty-first century, maybe a few years earlier as well. It is Castilianized as centenial and has a version as centenic. See english/centennial .
CENTENNIAL person who has been born from 1997 onwards. Others put the date at the year 2000. They are the so-called generation z, postmilénica or postmillenials. They are the ones who are part of the workforce from 2020
It means "centenary , relative to the century" . It is also a name for the generation born in the first decade of the twenty-first century.