1. a period of 10 years

Similar word(s): decennary, decennium

Definition categories: time, period

2. the cardinal number that is the sum of nine and one; the base of the decimal system

Similar word(s): ten, tenner

Definition categories: quantity

Sentences with decade as a noun:

- a decade of soldiers

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