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sev·en·teen

(sĕv′ən-tēn)

1. The cardinal number equal to 16 + 1.

2. The 17th in a set or sequence.

[Middle English seventene, from Old English seofontīne; see sept in the Appendix of Indo-European roots.]

sev′en·teen adj. & pron.

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:

Indo-European Roots

Semitic Roots

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.

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