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gad·o·lin·ite

(gădl-ə-nīt′)

A dark green or greenish-black silicate mineral, Be₂FeY₂Si₂O₁₀, containing several of the rare-earth elements in combination with iron.

[After Johan Gadolin (1760-1852), Finnish chemist.]

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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