exosmotic

“It is done by what in physics is known as _endosmotic_ and _exosmotic_ action.”

A Practical Physiology

“At all events, the endosmotic or exosmotic action of the skin of a living body must necessarily play an important _role_ in the absorption of medicinal agents; and, on the other hand, it is plain that fats, which render the living skin impermeable, necessarily also diminish or entirely neutralize its osmotic action.”

Scientific American Supplement, No. 514, November 7, 1885