せいき世紀seiki
1.

A division of time representing a period of 100 years, commonly used in the context of historical timelines or designating significant events within that timeframe. For instance, the 20th century spans from the year 1901 to 2000.

2.

A distinct period characterized by particular cultural, technological, or societal developments, often highlighted by notable achievements or changes, such as the emergence of space exploration during the new era of the 21st century.

3.

An indication of rarity or uniqueness, typically used to describe extraordinary occurrences or phenomena that happen once in a century, emphasizing their exceptional nature.

4.

A historical timeframe that encapsulates the collective experiences and events of previous generations, reflecting the evolution and legacy of a society over a significant span of time.

Example:

彼は19世紀に生まれた。

いっせいき一世紀isseiki
1.

A period of one hundred years, often used to mark significant historical eras and changes in society.

2.

The time span that encompasses a complete hundred-year cycle, commonly referenced in the context of timekeeping and historical analysis.

3.

A division of time that organizes and categorizes events, trends, and developments over a length of one hundred years.

4.

In cultural contexts, a century can signify a generational turning point, highlighting shifts in values and progress within populations over that time frame.

Example:

1世紀は100年です。

こんせいき今世紀konseiki
1.

The time period that spans from the year 2001 to 2100, reflecting contemporary events and developments in society, technology, and culture.

2.

The current hundred-year interval in the Gregorian calendar, highlighting the evolution of global perspectives and challenges unique to this era.

Example:

科学は今世紀になって急速な進歩を遂げた。

しんせいき新世紀shinseiki
1.

A period marking the beginning of a new hundred years, often associated with significant cultural, technological, or societal changes.

2.

The timeframe that follows the end of the previous century, symbolizing a fresh start or new possibilities in human history.

3.

An epoch characterized by advancements and transformations that redefine human life and interactions in various fields.

せいきまつ世紀末seikimatsu
1.

The final years of a century, particularly characterized by a sense of anxiety, decline, and hedonism, often associated with cultural and artistic movements during that time.

2.

A period marked by a prevailing sentiment of existential despair and decadence, especially notable in late 19th century Europe, where societal changes sparked a reflection on the meaning of life and the future.

3.

The transitional phase that comes with the end of a century, often imbued with a distinctive atmosphere of uncertainty and transformation, influencing various aspects of philosophy, art, and social behavior.

Example:

19世紀末になって初めて植物の品種改良は科学の一分野となった。