Exserted: protruded; projecting beyond the body or over a given point.
Exsertion: a protrusion: an extension of a line or other ornamentation beyond its ordinary course.
Extended: spread out: not lying one upon the other.
Extense: extended: expanded.
Extension plate: a structure at the base of the pulvillus whose function it is to extend it.
Extension sole: the pad-like pulvillus which may be extended by the extension plate through the pressure plate.
Extensor: that which extends or straightens out; applied to muscles.
Extenuate: to make or to become weak, thin or slender.
Exterior: the outside.
Exterior margin: the outer margin; sometimes used for costal margin.