The word is lustrum. As used in Rooster Cogburn (1975, John Wayne, Katharine Hepburn): Judge Parker: You have served this court for almost two lustrums.
Rooster Cogburn: What's a lustrum, Judge?
Judge Parker: Five years. Don't interrupt me. That's plenty authoritative for me, but the Oxford English Dictionary also gives a simple definition for lustrum as: a period of five years.
There is no name for 500 years. But you could call it 5 centuries or half a Millennium.
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A period of ten years is called a decade. Sometimes a decade is used more specifically, to refer to a ten-year period that starts with a year that ends in zero. For example, "the sixties" or "the 1960s" refers to the years 1960-1969.
ten-year
The highest or lowest something has been in a period of five years.
A period of 100 years is called a century.
A subscription period is the length of time your subscription lasts. Say for instance you want a year's prescription for a magazine. The prescription period would be one year, then you would have to pay more money in order to keep getting the magazine.
They refer to it as a 5 year survival rate because the statistics are gathered from an average of a 5 year period.
lustrum
A period of one year can be called a year, or astronomically speaking, a revolution.
It is not normal to get your period that early. If a 5 year old did start her period then it would be recommended that she see a doctor.
A ten year period is a decade.
a 12 month period is called a fiscal year, there is also a natural year.
A period of six months is called half a year.
A period of 1 thousand year is called a millennium.
a five-year period is a quinquennium
It's called a decade.
A period of 100 years is called a century.
If the 5 year period contains only 1 leap year then the answer is 2,629,440 minutes. If there are 2 leap years within the 5 year period then the answer is 2,630,880 mimutes.