haematocrit

US hematocrit

/ (ˈhɛmətəʊkrɪt, ˈhiː-) /

noun

a centrifuge for separating blood cells from plasma
Also called: packed cell volume the ratio of the volume occupied by these cells, esp the red cells, to the total volume of blood, expressed as a percentage

Word Origin for haematocrit

C20: from haemato- + Greek kritēs judge, from krinein to separate