noun.
The interval between any two quantities having the ratio 10 to 1.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
a period of 10 years
noun.
the cardinal number that is the sum of nine and one; the base of the decimal system
Word Usage
"Did I use the word decade somewhere I am not ware of or is the Al deal where he says I said something I did not say? psst, gmen, just a point of psst, gmen, just a point of order- not everyone is addressing you all the time."