The word bicentennial.
Bicentennial
No such word. If you mean bicentennial, it means a period of 200 years. In 1976, the US celebrated it's bicentennial- the country was 200 years old.
Bicentennial
Centennial means 100. If it is an anniversary, then 100 years. Remember that there are 100 cents (commonly called pennies) in one dollar.
Century as a word is derived from the latin "centi" which simply means "a hundred", so two centuries are two periods of 100 years, hence 200 years.
1 century means 100 years.. So, 2 centuries = 2 * 100 years Therefore, 2 centuries is 200 years
The word century means 100 years FYI: decade means 10 years
Bicentennial means it has happened yearly for 200 years or once every 200 years. Bi- (dual, two) cent- (100, 1/100)
The word meaning 1,000 years is millennium.
A century means 100 years.
25BC means that this time was 25 years before the common era (CA) or before christ (BC). 200AD means 200 years after the common era (CA) or after christ Add the two together: 25 + 200= 225 years.