n. pl. kur·to·ses (-sēz′)
A quantity indicating how sharply a probability distribution function increases and decreases around the distribution's mean.
[Greek kurtōsis, bulging, curvature, from kurtoun, to make bulge, from kurtos, convex; see sker-2 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.