The study of the shape and protuberances of the skull, based on the now discredited belief that they reveal character and mental capacity.
phren′o·logic (frĕn′ə-lŏjĭk, frē′nə-), phren′o·logi·cal (-ĭ-kəl) adj.
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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.