decennary(n = noun.time) decade, decennium - a period of 10 years;
is a kind of period, period of time, time period
is a part of century
has parts: twelvemonth, year, yr
has particulars: 1900s, 1530s, 1920s, twenties, 1820s, 1930s, thirties, 1830s, 1940s, forties, 1840s, 1950s, fifties, 1850s, 1750s, 1960s, sixties, 1860s, 1760s, 1970s, seventies, 1870s, 1770s, 1980s, eighties, 1880s, eighties, 1780s, 1990s, nineties, 1890s, nineties, 1790s