period, period of time, time period - an amount of time; "a time period of 30 years"; "hastened the period of time of his recovery"; "Picasso's blue period"

1900s - the decade from 1900 to 1909

1530s - the decade from 1530 to 1539

1920s, twenties - the decade from 1920 to 1929

1820s - the decade from 1820 to 1829

1930s, thirties - the decade from 1930 to 1939

1830s - the decade from 1830 to 1839

1940s, forties - the decade from 1940 to 1949

1840s - the decade from 1840 to 1849

1950s, fifties - the decade from 1950 to 1959

1850s - the decade from 1850 to 1859

1750s - the decade from 1750 to 1759

1960s, sixties - the decade from 1960 to 1969

1860s - the decade from 1860 to 1869

1760s - the decade from 1760 to 1769

1970s, seventies - the decade from 1970 to 1979

1870s - the decade from 1870 to 1879

1770s - the decade from 1770 to 1779

1980s, eighties - the decade from 1980 to 1989

1880s, eighties - the decade from 1880 to 1889

1780s - the decade from 1780 to 1789

1990s, nineties - the decade from 1990 to 1999

1890s, nineties - the decade from 1890 to 1899

1790s - the decade from 1790 to 1799

twelvemonth, year, yr - a period of time containing 365 (or 366) days; "she is 4 years old"; "in the year 1920"

century - 100 years

large integer - an integer equal to or greater than ten