du siècle

Meaning

1. of the century (biggest, greatest in living memory)
2. (informal) of a lifetime, once-in-a-lifetime

Pronounced as (IPA)

/dy sjɛkl/

Etymology

Cognate with German: Jahrhundertflut

In summary

Literally, “of the century”. Compare German Jahrhundertflut.
Compare mal du siècle.

Sentences

Il faut entrer dans le siècle , avec les armes du siècle .

We must enter the century, with the weapons of the century.