iontophoresis
noun
ion·to·pho·re·sis (ˌ)ī-ˌän-tə-fə-ˈrē-səs 
plural iontophoreses (ˌ)ī-ˌän-tə-fə-ˈrē-ˌsēz
: the introduction of an ionized substance (such as a drug) through intact skin by the application of a direct electric current
iontophoretic
(ˌ)ī-ˌän-tə-fə-ˈre-tik
adjective iontophoretically
(ˌ)ī-ˌän-tə-fə-ˈre-ti-k(ə-)lē
adverb 
Example Sentences
Recent Examples on the Web If the sweating is concentrated away from armpits, or if a new antiperspirant doesn't solve the issue, some experts will consider electrical iontophoresis treatments on hands, feet or facial regions to stem sweating. 
Zee Krstic, Good Housekeeping, 6 Sep. 2021
Zee Krstic, Good Housekeeping, 6 Sep. 2021 Word History
Etymology
borrowed from German Iontophorese, from ionto-, combining form representing Ion ion (borrowed from Greek iont-, iṓn, present participle of iénai "to go") + -o- -o- + -phorese -phoresis — more at issue entry 1
First Known Use
1909, in the meaning defined above
Medical Definition
iontophoresis
noun
ion·to·pho·re·sis (ˌ)ī-ˌänt-ə-fə-ˈrē-səs
plural iontophoreses -ˌsēz
: the introduction of an ionized substance (as a drug) through intact skin by the application of a direct electric current