[ ahy-on-tuh-fuh-ree-sis ]
/ aɪˌɒn tə fəˈri sɪs /


a painless alternative to drug injection in which a weak electrical current is used to stimulate drug-carrying ions to pass through intact skin.

Nearby words

  1. ionosonde,
  2. ionosphere,
  3. ionospheric wave,
  4. ionotropic receptor,
  5. ionotropy,
  6. ioof,
  7. iopamidol,
  8. iopanoic acid,
  9. iophendylate,
  10. ioshkar-ola

Origin of iontophoresis

1905–10; < Greek iont- (stem of iṓn), present participle of iénai to go (cf. ion) + -o- -o- + phorē-, verbid stem of phoreîn to carry (akin to phérein; see bear1) + -sis -sis

Related formsi·on·to·pho·ret·ic [ahy-on-tuh-fuh-ret-ik] /aɪˌɒn tə fəˈrɛt ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for iontophoresis


/ (aɪˌɒntəʊfəˈriːsɪs) /


biochem a technique for studying neurotransmitters in the brain by the application of experimental solutions to the tissues through fine glass electrodes

Word Origin for iontophoresis

C20: from Greek iont-, ion, from ienai to go + -phoresis

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for iontophoresis


[ ī-ŏn′tə-fə-rēsĭs ]


The use of an electric current to introduce the ions of a medicament into bodily tissues.ionization
Related formsi•on′to•pho•retic (-rĕtĭk) adj.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.