decade Hear it!

decade definition

dec·ade (dek′ād′; also, and for 3 usually, dek′əd, -id; Brit also di kād′, də-)

noun

  1. a group of ten
  2. a period of ten years; esp., in the Gregorian calendar
    1. officially a ten-year period beginning with the year 1, as 1921-1930, 1931-1940, etc.
    2. in common usage, a ten-year period beginning with a year 0, as 1920-1929, 1930-1939, etc.
  3. a division of the rosary consisting of one large bead and ten small beads

Etymology: LME < OFr < LL decas (gen. decadis) < Gr dekas < deka, ten

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