Real Dictionary

skin effect in American English
the tendency of alternating current to concentrate at or near the surface of a conductor
noun: the phenomenon in which an alternating current tends to concentrate in the outer layer of a conductor, caused by the self-induction of the conductor and resulting in increased resistance

skin effect in British English
noun: the tendency of alternating current to concentrate in the surface layer of a conductor, esp at high frequencies, thus increasing its effective resistance

skin effect in Electrical Engineering
noun: Skin effect is the tendency of current to stick to the outer layers of a conductor due to the presence of internal flux, that often happens at higher frequencies.