ECTOCARDIA

\ˌɛktəkˈɑːdi͡ə], \ˌɛktəkˈɑːdi‍ə], \ˌɛ_k_t_ə_k_ˈɑː_d_iə]\
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1898 - Warner's pocket medical dictionary of today.
By William R. Warner
 
1900 - A dictionary of medicine and the allied sciences
By Alexander Duane
 
1898 - American pocket medical dictionary
By Willam Alexander Newman Dorland
 
1916 - Appleton's medical dictionary
By Smith Ely Jelliffe