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cardiotachometer
cardiotachometer n. 
/ˌkɑːdɪə(ʊ)təˈkɒmᵻtə/, /ˌkɑrdioʊtəˈkɑmədər/ any of various instruments used to measure the rate at which the heart beats.
Brit. /ˌkɑːdɪə(ʊ)taˈkɒmᵻtə/
, /ˌkɑːdɪə(ʊ)taˈkɒmᵻtə//ˌkɑːdɪə(ʊ)təˈkɒmᵻtə/U.S. /ˌkɑrdioʊtæˈkɑmədər/
, /ˌkɑrdioʊtæˈkɑmədər//ˌkɑrdioʊtəˈkɑmədər/ΘΚΠ
the world > health and disease > healing > diagnosis or prognosis > specific measuring or recording > [noun] > specific measuring or recording instruments
pelvimeter1779
labimeter1785
pulmometer1814
neurometer1818
cardiometer1827
pneumatometer1832
lithometer1842
urinometer1843
spirometer1846
labidometer1848
paedometer1848
stethometer1850
pneumometer1853
psychograph1854
aesthesiometer1857
stethogoniometer1858
respirometer1859
anapnometer1860
chest-measurer1862
cardiograph1866
cyrtometer1867
myograph1867
myographion1867
pneumograph1868
anapnograph1870
polygraph1871
pneumatograph1874
pelycometer1875
baraesthesiometer1876
stetho-cardiograph1876
stethograph1876
haemocytometer1877
tambour1877
thoracometer1877
audiometer1879
tropometer1881
inspirometer1882
oncograph1882
oncometer1882
septometer1882
kinesimeter1885
pneograph1888
kinaesthesiometer1890
parturiometer1890
pneometer1890
spirograph1890
tonograph1890
pelvigraph1892
phrenograph1893
profilometer1895
calibrator1900
tremograph1904
urinopyknometer1905
adaptometer1907
phonoscope1908
electrocardiograph1910
phonocardiograph1913
arthrometer1918
pneumotachograph1926
cystometer1927
cardiotachometer1928
encephalograph1934
electroencephalograph1935
ballistocardiograph1938
phonoelectrocardioscope1942
electromyograph1944
pupillograph1951
statometer1957
pneumotach1961
magnetocardiograph1963
1928 Arch. Internal Med. 41 403 The cardiotachometer, an instrument to count the totality of heart beats over long periods of time.
1956 Newsweek 26 Nov. 104/2 The cardiotachometer..detects heart stoppage on the operating table seconds before it is recognizable to the surgeon.
2002 Amer. Jrnl. Obstetr. & Gynecol. 186 664/1 Fetal heart rate was measured by a cardiotachometer triggered by the arterial pressure pulse.
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