n :  a circumscribed mark or area: as  a  :  a circumscribed surface lesion of disease (as measles)  b  :  a circumscribed abnormality in an organ seen by means of X rays or an instrument <a on the retina>  <X rays revealed a on the lung> 
vi, spot*ted  spot*ting  :  to experience abnormal and sporadic bleeding in small amounts from the uterus .
 
 
 
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