[PlaneSploit]

1250-1300; < Medieval Latin sēculāris, Late Latin saeculāris worldly, temporal (opposed to eternal), Latin: of an age, equivalent to Latin saecul (um) long period of time + -āris -ar1; replacing Middle English seculer < Old French < Latin, as above

[kensai]

In fact: century in Italian is "secolo"... :)