This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Through or by way of the skin: transdermal inoculation; transdermal medication.

adj. Through the unbroken skin.

n. A transdermal patch or implant.

adj. through the unbroken skin; refers to medications applied directly to the skin (creams or ointments) or in time-release forms (skin patches)

"While a recent meta-analysis found that oral HRT increased the risk for stroke by 30%, no large studies have examined the effect of "transdermal" HRT on stroke."

transdermal patch    transdermal implant   

bio-identical    one-percent    androgenic    fda-approved    chewable    intravaginal    sublingual    doseage    CBC    in-situ