IPA: /trænˈdɜːr.məl/
KK: /trænˈdɜrml/
Relating to a method of delivering medication through the skin so that it enters the bloodstream.
The doctor prescribed a transdermal patch to help manage the patient's pain.
Transdermal → It is formed from "trans-" (meaning across) and "derma" (from Greek "derma", meaning skin). The word "transdermal" refers to something that passes across the skin.
Think of something that goes 'across' ('trans-') the 'skin' ('derma') — that's why transdermal means passing through the skin.