What does 世紀 mean?
世紀 is a Japanese noun meaning “century” in English. It can also be translated as “era” depending on context. It is written as 世紀 in kanji, せいき in hiragana, and seiki in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
彼は19世紀に生まれた。
He was born in the 19th century.