1.
century
A period of 100 years.
世紀の大発見。
The discovery of the century.
世紀 refers to a 100-year period.
COUNTING CENTURIES:
COMMON EXPRESSIONS:
NOTE ON READINGS:
When counting centuries, 二十世紀 (20th century) uses the reading にじゅっ for 20, with the っ before せ.