A condition in which the red blood cells have lost their smooth outlines, resembling an echinus or sea urchin. ... Origin: echino-+ G. -osis, condition ... (05 Mar 2000) ... 
Type: Term Pronunciation: ek′i-nō′sis Definitions: 1. A condition in which the red blood cells have lost their smooth outlines and come to resemble an echinus or sea urchin.