trans·der·mal .tran(t)s-'dər-məl, .tranz- adj relating to, being, or supplying a medication in a form for absorption through the skin into the bloodstream <\transdermal drug delivery> <a \transdermal nicotine patch>
trans·der·mal·ly adv

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trans·der·mal (trans-durґməl) entering through the dermis, or skin, as in administration of a drug applied to the skin in ointment or in a transdermal patch. Cf. percutaneous. Called also transcutaneous.

Medical dictionary. 2011.