Exasperate -us: rough with irregular elevations.
Excalcarate: without spurs.
Excaudate: see ecaudate.
Excavate: with a depression that is not the segment of a circle.
Excentric: not in the centre; revolving or arranged about a point that is not central.
Excision: with a deep cut: a notch or other cut-out part.
Excrementaceous -titious: made up of or resembling excrement.
Excrescence: an outgrowth or elevation; usually abnormal.
Excretion: the act of getting rid of waste products: any material or substance produced by any secretory glands or structures and which is voided or otherwise sent out from them.
Excretory: those structures concerned in ridding the body of waste products.