Transcutaneous vs. Cutaneous — What's the Difference?

Transdermal.

Of, relating to, or affecting the skin.

(medicine) Penetrating, entering, passing through, or shining through the intact skin (as by light waves or sound waves); in contrast to percutaneous meaning through a disruption in the skin.

Of, relating to, existing on, or affecting the exterior skin, especially the cutis.

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

Of or pertaining to the skin; existing on, or affecting, the skin; as, a cutaneous disease; cutaneous absorption; cutaneous respiration; cutaneous nerves; a cutaneous infection.

Relating to or existing on or affecting the skin;