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haematocrit
haematocrit n. 
/ˈhɛmətəkrɪt/, /hɪˈmatə(ʊ)krɪt/,
Brit. /ˈhiːmətəkrɪt/
, /ˈhiːmətəkrɪt//ˈhɛmətəkrɪt//hɪˈmatə(ʊ)krɪt/U.S. /hᵻˈmædəˌkrɪt/
(also earlier hæmatokrit) [Greek κριτής judge] a centrifuge used to estimate the volume occupied by the red blood cells in a sample of blood; the value obtained, expressed as a percentage of the volume of the sample./hᵻˈmædəˌkrɪt/ΘΚΠ
the world > health and disease > healing > diagnosis or prognosis > specific measuring or recording > [noun] > specific measuring or recording instruments > for constitution of blood
haemometer1872
globulimeter1878
haematocrit1894
coagulometer1900
blood pump1902
oximeter1942
aggregometer1967
1894 Med. News 29 Sept. 348/2 (heading) A modification of Hedin's hematokrit.
1894 Med. News 29 Sept. 350/2 States of comparative health..seem to be of the least importance of all the data necessary for the present status of the hematokrit.
1946 Nature 31 Aug. 304/1 These patients had,..because of the low hæmatocrit, a significantly reduced blood volume.
1958 Immunology 1 206 Blood samples were centrifuged in Wintrobe haematocrit tubes.
1966 Lancet 24 Dec. 1381/2 Chamberlain and Millard (1963) reduced the hæmatocrit and red-blood-cell volume (R.C.V.) in their patients with polycythæmia by means of oxygen.
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