decennium

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de·cen·ni·um

 (dĭ-sĕn′ē-əm)
n. pl. de·cen·ni·ums or de·cen·ni·a (-sĕn′ē-ə)
A period of ten years; a decade.

[Latin, from decennis, lasting for ten years : decem, ten; see dekm̥ in Indo-European roots + annus, year; see at- in Indo-European roots.]

decennium

(dɪˈsɛnɪəm) or

decennary

n, pl -niums, -nia (-nɪə) or -naries
(Units) a less common word for decade1
[C17: from Latin, from decem ten + annus year]

de•cen•ni•um

(dɪˈsɛn i əm)

n., pl. -cen•ni•ums, -cen•ni•a (-ˈsɛn i ə)
a period of ten years.
[1675–85; < Latin decenn(is) lasting ten years]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.decennium - a period of 10 years
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 - a period of 100 years
References in periodicals archive ?
Bear in mind that a commercial LIMS includes several decenniums, even centennials, of man-working days in its planning, programming and testing.
The structure of the area has evolved in steady decenniums starting from the 1950's when there was an increased demand for electronics products for warfare, which initially supported entrepreneurial firms such as Hewlett-Packard.