so·li·fluc·tion (sō′lə-flŭkshən, sŏl′ə-)
The slow, downhill movement of soil or other material in areas typically underlain by frozen ground.
[Latin solum, soil + Latin flūctiō, flūctiōn-, a flowing (from flūctus, past participle of fluere, to flow; see bhleu- 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.