That's called a millenium.
A period of 100 years is called a century. For example, the 20th century refers to the years from 1901 to 2000. Additionally, a period of 1,000 years is referred to as a millennium.
It COULD be called a Gigayear, but in practice it is simply called "a billion years".
A period of 25 years is called a "quarter century." This term is often used to refer to significant milestones or anniversaries that occur every 25 years.
It is a millennium that is equivalent to a thousand years.
A period of five years is called a "quinquennium." This term is derived from Latin, where "quinque" means five and "annus" means year. It is often used in various contexts, such as in finance, governance, and historical studies.
term millennium
It has no individual name
Its called a century! century means 100 years and decade means 10 years
It COULD be called a Gigayear, but in practice it is simply called "a billion years".
a millennium
Procession of the Equinox
One thousand years is a millennium, from the Latin "mille" for "thousand". One hundred years is a century, from the Latin "centum" for "hundred".
millennium
sevennenium
generation
It is a millennium that is equivalent to a thousand years.
The period with scarcity of food is called 'famine'