circulation    ugutembera
En-En dictionary 
blood    amaraso
(clot) umugoma
(of same blood) ubura
(of cow, drawn out to drink) ikiremve
(spurting of) umupfūnda
(~ circulation) itembera ry'amaraso
(~ transfusion) ugutera amaraso
(~ vessel) umutsi
En-En dictionary 
ugutēmbēra   9  class 9
singular: uku-
  
circulation, going around