Decade definition

dĕkād, dĕ-kād
Frequency:
A period of ten years.
noun
35
6
A period of ten years; esp., in the Gregorian calendar.
  • (officially) A ten-year period beginning with the year 1, as 1921-1930, 1931-1940, etc.
  • In common usage, a ten-year period beginning with a year 0, as 1920-1929, 1930-1939, etc.
noun
14
3
A group or series of ten.
noun
16
9
A group of ten.
noun
4
3
The definition of a decade is a period of 10 years.

An example of decade is 1990 to 2000.

noun
3
2
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A series or group of ten things. [from 16th c.]

A decade of soldiers.

noun
1
1
A period of ten years. [from 17th c.]
noun
1
1
(French history) In the French Revolutionary calendar, a group of ten days. [from 18th c.]
noun
1
1
(Roman Catholicism) A series of ten Hail Marys in the rosary.
noun
1
1
(physics, engineering) The interval between any two quantities having the ratio 10 to 1.

There are decades between 1.8 and 18, between 25 and 250 and between 0.03 and 0.003.

noun
0
1
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A division of the rosary consisting of one large bead and ten small beads.
noun
1
3

Other Word Forms

Noun

Singular:
decade
Plural:
decades

Origin of decade

  • Middle English a group of ten from Old French from Late Latin decas decad- from Greek dekas from deka ten dekm̥ in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle English, from Middle French decade, from Late Latin decas (“(set of) ten”), from Ancient Greek δέκας (dékas), from δέκα (déka, “ten”).

    From Wiktionary