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i·on·to·pho·re·sis

(ī-ŏn′tə-fə-rēsĭs)

The use of an electric current to transport an ionized substance, especially a drug, through the skin.

[From Greek ion, iont-, something that goes; see ION + -PHORESIS.]

i·on′to·pho·retic (-rĕtĭk) adj.

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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