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san·i·dine

(sănĭ-dēn′, -dĭn)

A yellow to white, glassy monoclinic mineral of the potassium feldspar group that forms from relatively high-temperature magmas.

[Greek sanis, sanid-, board (from its flat crystals) + -INE².]

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:

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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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