Is 5 years a decade? A decade is a period of 10 years. The word is derived (via French and Latin) from the Ancient Greek: δεκάς, romanized: dekas, which means a group of ten. Decades may describe any ten-year period, such as those of a person’s life, or refer to specific groupings of calendar years.
How many years is a decade and a half?
What is a decade century and millennium?
|Anniversary||Latin-derived term||Other terms|
|40 years||Quadragennial / Quadragenary||Ruby jubilee|
What is a semi decade? A period of five years.
How many years means 1 decade? a period of ten years beginning with a year whose last digit is zero: the decade of the 1980s.