:
 
  a period of 10 years
 
 especially : a 10-year period beginning with a year ending in 0. See the full definition for decade in the English Language Learners Dictionary. decade.
 What is a period of 20 years called?
 What is a period of 20 years called? Since, 10 years = a Decade, (via French and Latin) which means ‘a group of ten. ‘ So, 20 years =
 
  2 Decades
 
 .
 What does 2 decades mean?
: lasting two or more decades : occurring over a period of two or more decades …
 What is decade example?
 The definition of a decade is a period of 10 years. An example of decade is
 
  1990 to 2000
 
 . noun.
 What is the meaning of decade and century?
 Centurynoun.
 
  A period of a hundred years
 
 ; as, this event took place over two centuries ago. Decadenoun. a period of 10 years.
 How are decades counted?
 The most widely used method for denominating decades is to
 
  group years based on their shared tens digit
 
 , from a year ending in a 0 to a year ending in a 9 – for example, the period from 1960 to 1969 is the 1960s, and the period from 1990 to 1999 is the 1990s.
 What does 3 decades mean?
 
  a period of ten years
 
 : the three decades from 1776 to 1806.
 What do we call 50 years?
 Noun.
 
  Half-century
 
 .
 
  half-century
 
 .
 
  50
 
 -year-old. quinquagenarian.
 What are 12 years called?
| Anniversary Latin-derived term Other terms | 12 years Duodecennial Silk | 121⁄2 years – Parsley | 13 years Tredecennial Lace | 14 years Quattuordecennial Ivory | 
|---|
 What is a period of 25 years called?
 25 years is
 
  a Silver Jubilee
 
 .
 Do Decades start at 0 or 1?
 For a decade to begin, we
 
  must start with the year ending with 1 (2021)
 
 and finish with 10, or so far as chronology is concerned, a year ending in 0 (2030). For example, January 1, 2001, opened the 21st century and the start of the new millennium, just as the year 1 A.D.
 What is the meaning of last decade?
 
  a period of ten years
 
 , especially a period such as 2010 to 2019. Examples. Air traffic has increased 30% in the last decade.
 What comes after a decade?
 Decade: Ten (10) years. Century: One hundred (100) years.
 
  Millennium
 
 : One thousand (1,000) years. There are also terms used to describe millions of years.
 How do you use decade?
- [S] [T] I lost my son about a decade ago. ( …
- [S] [T] I worked in this company for three decades. ( …
- [S] [T] She has been married to him for a decade now. ( …
- [S] [T] After decades of civil war, order was restored. (
 Are we in the 21st century?
 And as we all know,
 
  we’re currently in the 21st century
 
 , but the years start with 20. … It wasn’t until the second century, aka the 2nd century, that the years had a digit in the hundreds column: the year 150 was a century and a half into the new era, putting it smack-dab in the middle of the 2nd century.
 What is this decade called?
 
  The 2010s
 
 (pronounced “twenty-tens”; shortened to “the ’10s”, also known as the tens or the teens) was a decade of the Gregorian calendar that began on 1 January 2010, and ended on 31 December 2019.
