- malarial knobs rounded protrusions of a red blood cell infected with Plasmodium falciparum, responsible for the adhesion of infected red cells to one another and to the endothelium of the blood vessel s containing these infected cells; results in capillary blockage responsible for much of the pathology of malignant tertian malaria.
* * *
knob 'näb n a rounded protuberance or lump
knob·by 'näb-ē adj
* * *
(nob) a bulbous mass or protuberance.Medical dictionary. 2011.