Here's a breakdown:
* Centuria: This Latin word existed long before the concept of a "century" as a time period. It originally referred to a military unit of 100 soldiers.
* Centuria evolved into the Latin word "saeculum", which came to mean "a generation" or "a long period of time".
* Saeculum then gave rise to the French word "siècle" and the English word "century" with the meaning of "a period of 100 years".
So, while there's no specific person who invented the word "century," its origins lie in the development of language over time.