Wordnet 3.0
ADJECTIVE (1)
1. 
 through the unbroken skin; 
 refers to medications applied directly to the skin (creams or ointments) or in time-release forms (skin patches); 
- Example: "transdermal estrogen"- Example: "percutaneous absorption"[syn: transdermal, transdermic, percutaneous, transcutaneous]
WordNet (r) 3.0 (2006):
transdermal
    adj 1: through the unbroken skin; refers to medications applied
           directly to the skin (creams or ointments) or in time-
           release forms (skin patches); "transdermal estrogen";
           "percutaneous absorption" [syn: transdermal,
           transdermic, percutaneous, transcutaneous]