Decade, also — decade, decade — a decade is most often understood as a calendar decade, a period of time that includes ten years. The word decade passed through the Latin language, which in turn borrowed it from the Greek word dav.-Gr. δεκάς (ðɛk'ɑːs, transliterationdekas), meaning group of ten. Other words for intervals of years also come from Latin: lustrum (5 years), millennium (1000 years).
Decade Count Options
There are two variants of the calendar count of decades. In the first case, the number tens of all years of this decade are the same, for example, 390 BC. (includes the years from 399 to 390 BC). According to the second option, the countdown is moved by one year, that is, the beginning of the decade in this case will be 400, and the end - 391 BC. e. For AD years, a unit is added, such as 2000-ni (2001 to 2010 instead of 2000 to 2009).
Other uses of the term
Also, the decade is freely used in the sense of "any period of time of 10 years", for example: United Nations Literacy Decade (United Nations Literacy Decade: Education for All, 2003-2012).
In all European countries and most countries of the world, the modern chronology of our era, including the 21st century and the 3rd millennium, is based on the Nativity of Christ and is denoted by the Latin Anno Domini, or abbreviated: A.D./AD. The complete phrase sounds: lat. Anno Domini Nostri Iesu Christi (in the year of our Lord Jesus Christ). According to this chronology, there is no zero year, therefore 1 year AD (new era) comes immediately after 1 year before Christmas (before the new era).
In the Ukrainian language, the equivalent "year of God", "year of God", "r. B.").
List of decades
Chronology (synonym of Chronology)
Anno Domini (Since Christmas)
Decade — Academic explanatory dictionary of the Ukrainian language [Archived September 19, 2016 at the Wayback Machine.]