century UK /ˈsɛn.t͡ʃʊɹ.i/US /ˈsɛn.(t)ʃ(ə.)ɹi/ noun8 •a period of time that lasts 100 years, such as the years from 1901 to 2000In 16th and 17th century Britain, for example, women’s alopecia was sometimes interpreted as retribution for sins, including adultery. — 2024 •A hundred runs scored either by a single player in one innings, or by two players in a partnership.He has scored 44 limited-overs centuries.They put on a century stand to help their team recover from 57–4 to 198–4. •A score of one hundred points.That was his tenth professional century. •A unit in ancient Roman army, originally of one hundred army soldiers as part of a cohort, later of more varied sizes (but typically containing sixty to seventy or eighty) soldiers or other men (guards, police, firemen), commanded by a centurion. •(US, informal) A banknote in the denomination of one hundred dollars. •A hundred things of the same kind; a hundred.'tis the subject of whole books: I might cite a century of authors pro and con. — 1624 •A race a hundred units (as meters, kilometres, miles) in length. •A political division of ancient Rome, meeting in the Centuriate Assembly. formscenturies