noun, masculine/sjɛkl/plural: siècles
century (period of 100 years)
“le xxiᵉ siècle” — the 21st century
Related: du siècle, mal du siècle, siècle des Lumières
Inherited from Middle French siecle, from Old French siecle, earlier secle (9th c.), a borrowing from Latin saeculum. The expected inherited form would be *sieil.