cen·ten·a·ry (sĕn-tĕnə-rē, sĕntə-nĕr′ē)
1. Of or relating to a 100-year period.
2. Occurring once every 100 years.
n. pl. cen·ten·a·ries
1. A 100-year period.
2. A centennial.
[Latin centēnārius, of a hundred, from centum, hundred; see dek in the Appendix of Indo-European roots.]
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.