decade

noun

Etymology: From Middle English decade, from Old French decade, from Late Latin decādem (“(set of) ten”), from Ancient Greek δεκάς (dekás), from δέκα (déka, “ten”). In reference to a span of ten years, originally a clipping of the phrase decade of years. By surface analysis, dec- + -ade. Doublet of decad and dekad.

1. A group, set, or series of ten , particularly

   “a decade of soldiers”

2. A group, set, or series of ten

   “The 1960s was a turbulent decade.”

   “I haven’t seen my cousin in over a decade!”

3. A group, set, or series of ten

   “The year was divided up into twelve months renamed after the seasons [...]; each month comprised three ‘decades’ of ten days – with the décadi replacing Sundays as a day of rest; and each day was reconsecrated to a natural product or farming tool or technique.”

4. A group, set, or series of ten
5. A group, set, or series of ten
6. A group, set, or series of ten
7. A group, set, or series of ten
8. A set of resistors, capacitors, etc. connected so as to provide even increments between one and ten times a base electrical resistance.
9. The interval between any two quantities having a ratio of 10 to 1.

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