decade

noun de·cade \ ˈde-ˌkād , de-ˈkād ; especially sense 1b ˈde-kəd \
Updated on: 23 Nov 2017

Definition of decade

1 : a group or set of 10
  • his prisoners were divided into decades
  • —William Godwin
: such as
a : a period of 10 years
  • has been teaching for over a decade
  • the decade of the twenties
b Roman Catholicism : a division of the rosary that consists primarily of 10 Hail Marys
2 mathematics : a ratio of 10 to 1 : order of magnitude

decadal

play \ˈde-kə-dᵊl\ adjective

Examples of decade in a Sentence

  1. The war lasted nearly a decade.

  2. The bridge was built a decade ago.

  3. The decade of the 1920s runs from January 1, 1920 to December 31, 1929.

  4. the first decade of the 21st century

  5. There have been a lot of changes during the past two decades.

Recent Examples of decade from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'decade.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of decade

Middle English, from Middle French décade, from Late Latin decad-, decas, from Greek dekad-, dekas, from deka — see deca-

Other Number-Related Terms


DECADE Defined for English Language Learners

decade

noun

Definition of decade for English Language Learners

  • : a period of 10 years; especially : a 10-year period beginning with a year ending in 0


DECADE Defined for Kids

decade

noun de·cade \ ˈde-ˌkād , de-ˈkād \

Definition of decade for Students

: a period of ten years


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