— iontophoretic /uy on'teuh feuh ret"ik/ , adj.
/uy on'teuh feuh ree"sis/ , n.
a painless alternative to drug injection in which a weak electrical current is used to stimulate drug-carrying ions to pass through intact skin.
[ 1905-10; iont- (s. of ión ), prp. of iénai to go (cf. ION) + -o- -O- + phore-, verbid s. of phoreîn to carry (akin to phérein; see BEAR 1 ) + -sis -SIS ]