It used to be called a score. So four score and 7 years would be 87 years.
A score.
The word for every twenty years is "score."
You may be thinking of a "score", as in Lincoln's Gettysburg Address ('Four score and seven years ago' means 87 years ago.)It is also called two decades.
You would say "Mo n jẹ ọdun mejidilogun ati amọkun" in Yoruba to mean I am twenty one thirty two years old.
"Centennial" refers to something that relates to or marks a 100th anniversary. It is commonly used to describe events, celebrations, or milestones that occur every 100 years.
An event occurring every two years is referred to as a biennial event. This pattern indicates that the event happens once every two years.
The word for every twenty years is "score."
No, we have phases of drought, but it isn't every 20 years.
every twenty years?
Every twenty years
bidecadal
Quadrenial
20 years=1 score
Twenty years is a score, as in "Fourscore and seven years ago..." Fourscore and seven equals 87.
Two decades is twenty years. You can also call it a score.
A century.
Month
A millenium.:)